BRIDGES
B.6
B
OTHER BRIDGES AND STRUCTURES
Other bridges and structures include drainage and fauna underpasses,
property access bridges and underpasses, bridges over local roads and
bridges off the main expressway alignment. These include the following:
BR06 Tributary of Black Waterholes Creek – Drainage & Fauna Underpass
BR07 Black Waterholes Creek – Drainage & Fauna underpass
BR09 Sawyers Gully Creek – Drainage & Fauna Underpass
BR10 Tributary of Sawyers Gully Creek – Drainage & Fauna Underpass
BR11 Tributary of Sawyers Gully Creek - Property Access at 413 Majors Lane &
Fauna Underpass
BR12 Bishops Creek – Drainage & Fauna Underpass
BR13 Twin Bridges over Allandale Quarry Property Access Track
BR15 Twin Bridges over Camp Road
BR16 Watercourse at Station 30870 - Drainage and Fauna Underpass
BR20 Bridge over Main Northern Railway on Connection to New England
Highway
Underpasses
The six combined drainage and fauna underpasses and the property access
and fauna underpass at Majors Lane are of similar design and construction.
Due to the low visibility of the underpasses with all situated in isolated
bushland areas the headwalls and wing walls have a grooved off-form finish
only.
Each headwall and wing wall has a one metre galvanized steel twin rail safety
fence on top.
Each underpass unless otherwise described has a central cell that provides a
low flow channel to make sure the other two cells will provide dry fauna access
during normal flow conditions. The landscaping of bridge underpasses and
the provision of fauna furniture is subject to the review and agreement of the
project ecologist and OEH prior to finalisation.
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B.6.1
BR06 Tributary of Black Waterholes Creek - Drainage and Fauna
Underpass
The underpass structure at the Tributary of Black Waterholes Creek has a
box culvert construction that consists of three cells of 3000 x 2400 millimetre
precast crown units on a cast in-situ reinforced concrete base slab. Reinforced
concrete wingwalls will be cast onto the apron slabs.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
The underpass supports approximately 1.5 metres maximum height of fill.
Minimum fill is approximately 1.0 metres, which is adequate to accommodate
the pavement thickness.
Figure B.6.1.1
70
0
BR06 Tributary of Black Waterholes Creek - Drainage and Fauna Underpass: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Figure B.6.1.2
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BR06 Tributary of Black Waterholes Creek - Drainage and Fauna Underpass: Cross Sectional Elevation
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B.6.2
BR07 Black Waterhole Creek - Drainage and Fauna Underpass
The underpass structure at Black Waterholes Creek has a box culvert
construction that consists of three cells of 2700 x 2400 millimetres precast
crown units and a fourth cell formed by a link slab.
The underpass supports approximately 3.0 metres maximum height of fill.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Figure B.6.2.1
72
0
BR07 Black Waterholes Creek - Drainage and Fauna Underpass: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Figure B.6.2.2
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BR07 Black Waterholes Creek - Drainage and Fauna Underpass: Cross Sectional Elevation
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B.6.3
BR09 Sawyers Gully Creek - Drainage and Fauna Underpass
The underpass structure at Sawyers Gully Creek has a box culvert construction
that consists of three cells of 2400 x 2400 millimetre precast crown units and a
fourth cell formed by a link slab.
The underpass supports approximately 8 metres maximum height of fill.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Figure B.6.3.1
74
0
BR09 Sawyers Gully Creek - Drainage and Fauna Underpass: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Figure B.6.3.2
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BR09 Sawyers Gully Creek - Drainage and Fauna Underpass: Cross Sectional Elevation
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B.6.4
BR10 Tributary of Sawyers Gully Creek - Drainage and Fauna
Underpass
The underpass structure at the Tributary of Sawyers Gully Creek has a box
culvert construction that consists of two cells of 3000 x 2400 millimetres
precast crown units and a third cell formed by a link slab. The crown units are
supported on a cast in-situ reinforced concrete base slab.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
The underpass supports approximately 3.0 metres maximum height of fill.
Figure B.6.4.1
76
0
BR10 Tributary of Sawyers Gully Creek - Drainage and Fauna Underpass: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Figure B.6.4.2
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BR10 Tributary of Sawyers Gully Creek - Drainage and Fauna Underpass: Cross Sectional Elevation
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B.6.5
BR11 Tributary of Sawyers Gully Creek - Property Access 413
Majors Lane and Fauna Underpass
The combined property access and fauna underpass near the tributary of
Sawyers Gully Creek consists of a single cell of 3600 x 3600 millimetres
precast crown units on a cast in-situ slab.
Fauna access will be along the roadway in the underpass. No specific fauna
provisions have been provided in accordance with advice from the RTA.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
The underpass supports approximately 1.6 metres maximum height of fill. The
minimum fill is approximately 1.0 metres which is adequate to accommodate
the pavement thickness.
Figure B.6.5.1
78
BR11 Tributary of Sawyers Gully Creek - Property Access 413 Majors Lane and Fauna Underpass: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Figure B.6.5.2
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BR11 Tributary of Sawyers Gully Creek - Property Access 413 Majors Lane and Fauna Underpass: Cross Sectional Elevation
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B.6.6
BR12 Bishops Creek - Drainage and Fauna Underpass
The underpass structure at Bishops Creek has a box culvert construction
that consists of two cells of 3300 x 2400 millimetres precast crown units on
a cast in-situ reinforced concrete base slab. Apron slabs at each end of
the underpass will be cast as part of the base slab and reinforced concrete
wingwalls will be cast onto the apron slabs.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
One cell is provided with a low flow channel to ensure that the other cell will
provide dry fauna access during normal flow conditions.
The underpass supports approximately 10 metres maximum height of fill.
Fish friendly features have been provided at this underpass including a
low flow channel, rocks embedded in the invert to provide a more natural
environment and to promote sediment accumulation and pools at each end to
dissipate flow energy and provide a resting area for the fish.
Figure B.6.6.1
80
0
BR12 Bishops Creek Drainage and Fauna Underpass: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Figure B.6.6.2
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BR12 Bishops Creek Drainage and Fauna Underpass: Section
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B.6.7
BR13 Twin Bridges over Allandale Quarry Property Access Track
The twin bridges are 13.0 metres long single span structures over
the combined Allandale Quarry Access Track and fauna access. The
superstructure comprises spaced 480 millimetre deep prestressed concrete
planks with a compositely acting reinforced concrete deck slab. The bridge is
square to the main alignment.
Longitudinal drainage is not required.
Fauna access under the bridge is provided on the access track. The
information document, Fauna Mitigation Measures Final Draft Report indicates
that given the expected very low traffic volumes, the access track can be used
by fauna.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
A reinforced soil wall is provided at both abutments and will be placed
flush with the wingwalls. Wingwalls will be precast with a finish to match the
reinforced soil walls. During detailed design the ribbed panel shown in Figures
6.7.1 and 6.7.2 was replaced by a horizontal grooved panel to be consistent
with the design of similar retaining wall structures developed for the Hunter
Alliance project.
Twin rail traffic barriers have been provided with two conduits encased in each
barrier. The twin rail traffic barrier extends beyond the end of deck to the end of
the reinforced soil wall.
Provision has been made for Energy Australia conduits suspended between
planks of the northbound bridge.
Figure B.6.7.1
82
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BR13 Twin Bridges over Allandale Quarry Property Access Track: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Figure B.6.7.2
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BR13 Twin Bridges over Allandale Quarry Property Access Track: Cross Sectional Elevation
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B.6.8
BR15 Twin Bridges over Camp Road
The Expressway crosses Camp Road as twin bridges with overall lengths of
23.4 metres. The road carriageway is 10.75 metres wide (northbound) and 10.5
metres wide (southbound).
Each superstructure comprises 1000 millimetre deep precast prestressed
Super-T girders acting compositely with a 180 millimetre minimum thickness
in-situ concrete deck slab.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
The bridge parapets comprise 1300 millimetre high twin rail traffic barriers. The
parapets and twin rail traffic barriers extend along the bridge approaches to
the top of batter where the standard RTA transition to a thrie beam barrier has
been adopted. Two conduits are provided in each barrier.
A longitudinal drainage pipe is provided under each bridge to minimise the
flow of water over the expansion joint.
Provision has been made for the future attachment by others of a 4.3 metres
(minimum) high noise wall on the eastern side of the southbound carriageway
using the same attachment detail as shown for Bridge BR24.
During detailed design the ribbed panel shown in Figures 6.7.1 and 6.7.2 was
replaced by a horizontal grooved panel to be consistent with the design of
similar retaining wall structures developed for the Hunter Alliance project.
Figure B.6.8.1
84
0
BR15 Twin Bridges over Camp Road: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Figure B.6.8.2
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BR15 Twin Bridges over Camp Road: Cross Sectional Elevation
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B.6.9
BR16 Watercourse at Station 30870 - Drainage and Fauna
Underpass
The underpass structure at Station 30870 consists of a single 2400 x 2400
millimetre precast crown unit on a cast in-situ reinforced concrete base slab.
Half of the cell has been detailed with a low flow channel to ensure that
the remainder of the cell will provide dry fauna access during normal flow
conditions.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
The underpass supports approximately 11 metre maximum height of fill.
Figure B.6.9.1
86
0
BR16 Watercourse at Station 30870 Drainage and Fauna Underpass: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Figure B.6.9.2
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BR16 Watercourse at Station 30870 Drainage and Fauna Underpass: Section
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87
B.6.10
BR20 Bridge over Main Northern Railway on Connection to New
England Highway
The bridge over the Main Northern Railway on the Connection to the New
England Highway is a single span structure with an overall length of 33.75
metres. The road carriageway width varies and is a maximum of 20.9 metres
wide between barriers. Conduits for Energy Australia are suspended between
the outer girders on the northern side.
The superstructure comprises 1500 millimetre deep precast prestressed
Super-T girders acting compositely with a 180 millimetre minimum thickness
in-situ concrete deck slab. It is simply supported on laminated elastomeric
bearings. Transverse restraint is provided at each abutment.
The abutments comprise reinforced concrete headstocks supported on
1200 millimetre diameter bored piles socketed into rock and 1000 millimetre
diameter reinforced concrete column extensions within the reinforced soil
embankment.
the wingwalls. Two conduits are provided in each barrier.
A minimum vertical clearance of 7.3 metres has been provided over the tracks
and horizontal clearances complying with Drawing H8R-DWG-S2G-FEA-0505
of the ARTC Agreement, allowing for quadruplicated tracks, have been
detailed.
The abutment columns and piles have been designed for train impact loading
and cement stabilised backfill has been detailed at the base of the reinforced
soil block to ensure the integrity of the wall in the event of impact. The
superstructure has also been reviewed for train impact.
A longitudinal drainage pipe is provided on the northern side.
The horizontal ribbed reinforced soil wall panels have been replaced during
detailed design by horizontally grooved pre-cast panels.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
The bridge parapets comprise 1300 millimetre high twin rail traffic barriers with
an integrated safety screen. There is a connection to thrie beam at the ends of
Figure B.6.10.1
88
0
BR20 Bridge over Main Northern Railway on Connection to New England Highway: Elevation
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BRIDGES
B
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Figure B.6.10.2
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BR20 Bridge over Main Northern Railway on Connection to New England Highway: Cross Sectional Elevation
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90
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BRIDGES
B.7
B
Creek or Watercourse Crossings
There are three creek crossings required on the Hunter Expressway Design
and Construct section, over the following creeks:
– Swamp Creek (BR04)
– Anvil Creek (BR21)
– Black Creek (BR25)
Black Creek and Swamp Creek are tributaries of the Hunter River and require
several spans to cross. Generally only the parapets will be clearly visible
from the expressway, but on the twin bridges at Swamp and Black Creeks
the headstocks will also be visible. Distant views to the bridges will also be
possible from the surrounding context. The design has been kept consistent
for all the bridges over creeks to maintain a “family” bridge aesthetic.
Headstock and Piers
Parapets
Abutments and Scour Protection
The parapets consist of a 600 millimetre concrete barrier with twin metal rails
on top allowing views to be maximised from the expressway to the creek and
surrounding countryside and to minimise the apparent depth of the parapet
when seen from each carriageway. The outer edge of the parapet extends
downwards below the soffit of the bridge deck to hide the substructure,
providing consistent proportions and casting a strong shadow line minimising
the visual impact of the bridge structure. The parapets taper at 15 degrees
and the top of the parapet has a cross fall towards the expressway for
drainage to minimise staining on the face of the parapet. The parapets
are formed from precast units 2.7 metres long and are integrated with the
positions of the posts for the twin rail traffic barrier to occur at the centre point
between the posts.
The spill through abutments beneath the bridges are finished with rock filled
rip rap and toe trenches in accordance with the scour protection and fauna
passage requirements.
Bridges over Creeks - Headstock Detail 1: Section at Pier
Bridges over Creeks - Headstock Detail 2: End Elevation
Bridges over Creeks - Headstock Detail 1: Elevation
Bridges over Creeks - Headstock Detail 2: Plan
Planting under Creek Crossings
Scour protection below watercourse crossings will be landscaped to
incorporate 70% planting of the area below the bridge excluding the low flow
channel.
Refer to Figure B.7.1
The design of the headstocks has been based on the headstock found on
the existing bridge crossing the railway at Wine Country Drive (refer to photo
below). The headstock in section has a 45 degree chamfer to the bottom
edge of the taper to the circular piers. The soffit of the headstock also tapers
in elevation at each end to close to the first pier further minimising the visual
impact of the headstock. The corners of the headstocks are also rounded as
illustrated in the sketches opposite giving a softer robust appearance. The
piers have been positioned to minimise the impacts on the creek beds.
Figure B.7.1
HBO+EMTB
SEPTEMBER 2011
SYU-002251
Bridges over Creeks: Headstock Details
H U N T E R E X P R E S S W AY: K U R R I K U R R I T O B R A N X T O N - F I N A L U R B A N + L A N D S C A P E D E S I G N S U B P L A N R E P O R T ( 1 0 0 % )
91
B.7.1
BR04 Twin Bridges over Swamp Creek
The twin bridges are 66.0 metres long and each has five spans of 13.2 metres
with 8 degrees of skew to suit the creek alignment. The structures comprise
a northbound carriageway bridge and a separate southbound bridge over
Swamp Creek. The superstructure is made up of 480 millimetre deep prestressed concrete planks with a reinforced concrete deck slab.
Notes
Drawings are for illustrative purposes only. For dimensions
and extent of works refer to Engineers Drawings.
For Landscaping types and extents refer to Landscape
Drawings.
Design may be subject to change in the detailed design
process.
Landscaping on approaches to all combined drainage/
fauna underpasses must be reviewed by Project Ecologist
and signed off by OEH.
Piers are located clear of the Creek and 1050 millimetre diameter bored piles
with 750 millimetre diameter column extensions have been adopted. The pier
headstock depth is 900 millimetre and the width is 1000 millimetre. During
detailed design the design for the shape of the headstocks has been simplified
to be consistent with similar creek crossing bridges in the Hunter Alliance
design.
The abutments are spill-through and the headstocks are supported on 750
millimetre diameter bored piles. A batter slope of 1.5 to 1 has been adopted
with scour protection for the 2000 year ARI flood.
Twin rail barriers are detailed along the parapets with provision for two conduits
in each barrier. Longitudinal drainage will be provided on each bridge.
Provision has been made for Energy Australia conduits on the northbound
bridge, suspended between planks.
Fauna and fish friendly access under the bridges has been provided.
Figure B.7.1.1
92
0
BR04 Twin Bridges over Swamp Creek: Elevation
HBO+EMTB
SEPTEMBER 2011
SYU-002251
10
20m
H U N T E R E X P R E S S W AY: K U R R I K U R R I T O B R A N X T O N - F I N A L U R B A N + L A N D S C A P E D E S I G N S U B P L A N R E P O R T ( 1 0 0 % )