Ketchikan Gateway County, AK

56 public highway bridges

Ketchikan Gateway County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Ketchikan Gateway County, Alaska contains 56 public highway bridges. Roughly 41.1% are rated “Good,” 46.4% “Fair,” and 12.5% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

56
Total Bridges
41.1%
Good
46.4%
Fair
12.5%
Poor Condition

Condition Distribution

Good
41.1% (23)
Fair
46.4% (26)
Poor
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.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.