Ketchikan Gateway County, AK

56 public highway bridges

Ketchikan Gateway County Bridge Snapshot

Ketchikan Gateway County, Alaska contains 56 public highway bridges in the FHWA National Bridge Inventory. Roughly 41.1% are rated “Good,” 46.4% “Fair,” 12.5% “Poor,” and 12.5% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in AK are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

56
Total Bridges
41.1%
Good
12.5%
Poor
12.5%
Structurally Deficient

Condition Distribution

Good
41.1% (23)
Fair
46.4% (26)
Poor
12.5% (7)
SD
12.5% (7)

All Bridges (56)

8000000

Fair

Over: PERM

WARD LAKE, Ketchikan Gateway, AK

Built 1978 ADT: 100

YOUNG ST/SAYLES ST

Fair

Over: DUNTON ST VIADUCT

MILE POINT 0.1, Ketchikan Gateway, AK

Built 1979 Load: 3.1 t ADT: 565

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

SHELTER, Ketchikan Gateway, AK

Built 1980 Load: 19.8 t

8000000-21.711

Fair

Over: MOD

MARGARET, Ketchikan Gateway, AK

Built 1992 Load: 20.1 t

8040000

Fair

Over: MOD

MARGARET, Ketchikan Gateway, AK

Built 1989 Load: 20.1 t

8340000

Fair

Over: MOD

SHELTER, Ketchikan Gateway, AK

Built 1993 Load: 20.1 t

8040000

Fair

Over: MOD

MARGARET, Ketchikan Gateway, AK

Built 1989 Load: 21.4 t

8340000

Fair

Over: MOD

SHELTER, Ketchikan Gateway, AK

Built 1990 Load: 21.7 t

GRANT STREET

Fair

Over: GRANT STREET VIADUCT

MILE POINT 0.1, Ketchikan Gateway, AK

Built 1970 Load: 21.8 t ADT: 1,016

NO DATA ENTERED

Fair

Over: MOD

GRAVINA, Ketchikan Gateway, AK

Built 1990 Load: 23.7 t ADT: 10

NORTH TONGASS HWY

Fair

Over: CARLANNA CREEK

MILE POINT 0.3, Ketchikan Gateway, AK

Built 1973 Load: 27.9 t ADT: 9,210

MARINE HWY ROUTE

Fair

Over: KETCHIKAN BERTH I

MILE POINT 0.2, Ketchikan Gateway, AK

Built 1988 Load: 28.1 t ADT: 164

TIDAL OP STL SPAN

Fair

Over: KETCHIKAN BERTH II

KETCHIKAN, Ketchikan Gateway, AK

Built 1986 Load: 29.8 t ADT: 250

SOUTH TONGASS HWY

Fair

Over: KETCHIKAN CREEK

MILE POINT 2.4, Ketchikan Gateway, AK

Built 1944 Load: 31.8 t ADT: 6,850

NO DATA ENTERED

Fair

Over: PERM

UPPER CARROLL, Ketchikan Gateway, AK

Built 2002 Load: 32.4 t ADT: 2

FERRY SHUTTLE RTE

Fair

Over: GRAVINA AIRPORT F.T. I

KETCHIKAN AIRPORT, Ketchikan Gateway, AK

Built 1998 Load: 32.7 t ADT: 348

8400000

Fair

Over: PERM

UPPER CARROLL, Ketchikan Gateway, AK

Built 1997 Load: 32.7 t ADT: 2

8400000

Fair

Over: PERM

UPPER CARROLL, Ketchikan Gateway, AK

Built 1997 Load: 32.7 t ADT: 2

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

FIRE COVE, Ketchikan Gateway, AK

Built 1992 Load: 32.7 t

NO DATA ENTERED

Fair

Over: NO DATA ENTERED

SHELTER, Ketchikan Gateway, AK

Built 1995 Load: 32.7 t

NO DATA ENTERED

Fair

Over: PERM

UPPER CARROLL, Ketchikan Gateway, AK

Built 2002 Load: 32.7 t ADT: 2

NORTH TONGASS HWY

Fair

Over: CANNERY CREEK

MILE POINT 3.6, Ketchikan Gateway, AK

Built 1989 Load: 38.5 t ADT: 5,280

8430000

Fair

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1982 Load: 49.9 t ADT: 5

8400600-0.59

Fair

Over: MOD

UPPER CARROLL, Ketchikan Gateway, AK

Built 2007 Load: 60.9 t ADT: 2

MARGARET

Fair

Over: NO DATA ENTERED

MARGARET, Ketchikan Gateway, AK

Built 2010 Load: 70.0 t

8400600-0.70

Fair

Over: MOD

UPPER CARROLL, Ketchikan Gateway, AK

Built 2007 Load: 97.2 t ADT: 2

NO DATA ENTERED

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 2003 Load: 22.7 t ADT: 5

SOUTH TONGASS HWY

Good

Over: FRONT AND MILL ST VIAD

MILE POINT 2.1, Ketchikan Gateway, AK

Built 1973 Load: 25.4 t ADT: 6,830

NO DATA ENTERED

Good

Over: MOD

SHELTER, Ketchikan Gateway, AK

Built 2015 Load: 31.8 t ADT: 5

NO DATA ENTERED

Good

Over: NO DATA ENTERED

SHELTER, Ketchikan Gateway, AK

Built 2015 Load: 31.8 t ADT: 5

8060210-0.238

Good

Over: NO DATA ENTERED

FIRE COVE, Ketchikan Gateway, AK

Built 1995 Load: 32.7 t

NO DATA ENTERED

Good

Over: PERM

UPPER CARROLL, Ketchikan Gateway, AK

Built 2002 Load: 32.7 t ADT: 2

8000030

Good

Over: PERM

WARD LAKE, Ketchikan Gateway, AK

Built 1991 Load: 36.6 t ADT: 50

8400000

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1987 Load: 40.5 t ADT: 5

8440000

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1987 Load: 42.8 t ADT: 5

WATER STREET

Good

Over: WATER ST NO 2

MILE POINT 0.2, Ketchikan Gateway, AK

Built 2018 Load: 45.1 t ADT: 650

8400000

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1985 Load: 46.0 t ADT: 5

8400000

Good

Over: PERM

SHOAL COVE, Ketchikan Gateway, AK

Built 1985 Load: 49.2 t ADT: 5

NORTH TONGASS HWY

Good

Over: FIRST WATERFALL CREEK

MILE POINT 13.9, Ketchikan Gateway, AK

Built 2019 Load: 55.1 t ADT: 330

NORTH TONGASS HWY

Good

Over: SECOND WATERFALL CREEK

MILE POINT 14.5, Ketchikan Gateway, AK

Built 2019 Load: 55.1 t ADT: 330

8060000-3.286

Good

Over: NO DATA ENTERED

FIRE COVE, Ketchikan Gateway, AK

Built 2005 Load: 70.0 t

8430000

Good

Over: ELDERBERRY CREEK

SHOAL COVE, Ketchikan Gateway, AK

Built 2011 Load: 70.0 t ADT: 5

8430000

Good

Over: MONTY PYTHON CREEK

SHOAL COVE, Ketchikan Gateway, AK

Built 2011 Load: 70.0 t ADT: 5

8440000

Good

Over: RED BULL SLOUGH

SHOAL COVE, Ketchikan Gateway, AK

Built 2011 Load: 70.0 t ADT: 5

MARGARET

Good

Over: NO DATA ENTERED

MARGARET, Ketchikan Gateway, AK

Built 2010 Load: 70.0 t

NO DATA ENTERED

Good

Over: END OF THE LINE CREEK

SHOAL COVE, Ketchikan Gateway, AK

Built 2011 Load: 70.6 t ADT: 3

NO DATA ENTERED

Good

Over: LICKING CREEK

SHOAL COVE, Ketchikan Gateway, AK

Built 2011 Load: 70.6 t ADT: 5

8400000

Good

Over: NO DATA ENTERED

SHOAL COVE, Ketchikan Gateway, AK

Built 2010 Load: 70.6 t ADT: 5

840000

Good

Over: NO DATA ENTERED

SHOAL COVE, Ketchikan Gateway, AK

Built 2010 Load: 70.6 t ADT: 5

NO DATA ENTERED

Poor

Over: MOD

MARGARET, Ketchikan Gateway, AK

Built 1989 Load: 8.1 t

Read our methodology — how this data is sourced, computed, and verified.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial