Preliminary Impact Summary for Katlian Bay Road Project
Criteria Evaluated
Total Length (miles)
Total Area Impacted1 (acres)
Length of Katlian River Bridge
(ft)
Presence of slopes > 67%
Presence of marine/estuary
wetland habitat
Wetland acres impacted
No. of cataloged anadromous
stream crossings
No. of navigable streams crossed
Presence of eagle nests
Presence of threatened or
endangered species
USFS land use designations
Presence of floodplains as defined
by the FEMA
Presence of cultural and historic
sites
Potential impacts to drinking
water sources
Potential impacts to water quality
Potential impacts to landowners
Potential impacts to air quality,
traffic, and noise
1
Original
Conceived
Route
8
79
330
Option Considered
but Dismissed
Proposed Route
10
101
260
9
97
150
20.7
Present
33.6
Present
33.6
None
17.7
4
23.9
4
12.0
4
1 (Katlian River)
6 nests are within
330 feet of ROW
1 (Katlian River)
2 nests are within
330 feet of the ROW
1 (Katlian River)
2 nests are within
330 feet of the
ROW
None
None
None
Crosses Semiremote Recreation
LUD
3 crossings of
Zone-A
floodplains
None
Crosses Semi-remote
Recreation LUD
3 crossings of
Zone-A floodplains
Crosses Semiremote Recreation
LUD
3 crossings of
Zone-A floodplains
None
None
None
None
None
Temporary
construction
disturbances to be
minimized by
BMps
Crosses lands
owned/managed
by Alaska State,
Shee Atika, and
USFS
Temporary
construction
disturbances
likely
Temporary
construction
disturbances to be
minimized by BMPs
Temporary
construction
disturbances to be
minimized by BMPs
Crosses lands
owned/managed by
Alaska State, Shee
Atika, and USFS
Crosses lands
owned/managed by
Alaska State, Shee
Atika, and USFS
Temporary
construction
disturbances likely
Temporary
construction
disturbances likely
For this initial alternative comparison, ROW width is estimated using a generic approach with slopes of
0%-33% having a 70-foot ROW width, slopes of 35%-55% having an 80 foot-width and slopes of 55% or
greater having a 95-foot ROW width. Final ROW widths would be determined following more detailed
engineering design and would likely decrease, although intervisible turnouts, lookouts, and parking areas
may increase some areas of the ROW.