Matanuska-Susitna County, AK

26 public highway bridges

Matanuska-Susitna County Bridge Snapshot

Matanuska-Susitna County, Alaska contains 26 public highway bridges in the FHWA National Bridge Inventory. Roughly 15.4% are rated “Good,” 80.8% “Fair,” 3.8% “Poor,” and 3.8% 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.

26
Total Bridges
15.4%
Good
3.8%
Poor
3.8%
Structurally Deficient

Condition Distribution

Good
15.4% (4)
Fair
80.8% (21)
Poor
3.8% (1)
SD
3.8% (1)

All Bridges (26)

DENALI HIGHWAY

Fair

Over: BRUSHKANA CREEK

MILE POINT 104.7, Matanuska-Susitna, AK

Built 1955 Load: 19.2 t ADT: 60

DENALI HIGHWAY

Fair

Over: CLEARWATER CREEK

MILE POINT 55.9, Matanuska-Susitna, AK

Built 1957 Load: 24.5 t ADT: 50

BIG LAKE ROAD

Fair

Over: FISH CREEK

MILE POINT 5.0, Matanuska-Susitna, AK

Built 1973 Load: 24.9 t ADT: 1,610

PARKS HIGHWAY

Fair

Over: KASHWITNA RIVER

MILE POINT 48.3, Matanuska-Susitna, AK

Built 1962 Load: 25.5 t ADT: 2,640

PARKS HIGHWAY

Fair

Over: HURRICANE GULCH

MILE POINT 139.7, Matanuska-Susitna, AK

Built 1971 Load: 25.5 t ADT: 940

PARKS HIGHWAY

Fair

Over: HONOLULU CREEK

MILE POINT 143.8, Matanuska-Susitna, AK

Built 1971 Load: 26.9 t ADT: 940

PARKS HIGHWAY

Fair

Over: EAST FORK CHULITNA RIVER

MILE POINT 150.8, Matanuska-Susitna, AK

Built 1967 Load: 29.6 t ADT: 900

WILLOW/FISHHOOK RD

Fair

Over: DECEPTION CREEK

MILE POINT 30.4, Matanuska-Susitna, AK

Built 1972 Load: 30.2 t ADT: 580

BRADLEY ROAD

Fair

Over: TRAPPER CREEK

MILE POINT 0.8, Matanuska-Susitna, AK

Built 1992 Load: 30.3 t ADT: 110

N SUSHANA ST

Fair

Over: LITTLE SUSITNA RIVER

WASILLA, Matanuska-Susitna, AK

Built 1984 Load: 30.4 t ADT: 10

PARKS HIGHWAY

Fair

Over: LITTLE WILLOW CREEK

MILE POINT 39.8, Matanuska-Susitna, AK

Built 1962 Load: 30.6 t ADT: 3,000

OLD GLENN, PALMER

Fair

Over: KNIK RIVER

MILE POINT 8.7, Matanuska-Susitna, AK

Built 1975 Load: 30.6 t ADT: 1,380

BACK ACRES ROAD

Fair

Over: BODENBURG CREEK

MILE POINT 0.1, Matanuska-Susitna, AK

Built 2002 Load: 32.0 t ADT: 30

PARKS HIGHWAY

Fair

Over: CHULITNA RIVER

MILE POINT 98.3, Matanuska-Susitna, AK

Built 1970 Load: 32.5 t ADT: 1,120

OLD GLENN, PALMER

Fair

Over: GOAT CREEK

MILE POINT 6.2, Matanuska-Susitna, AK

Built 1977 Load: 32.6 t ADT: 1,710

PARKS HIGHWAY

Fair

Over: LITTLE COAL CREEK

MILE POINT 129.0, Matanuska-Susitna, AK

Built 1969 Load: 32.8 t ADT: 970

KNIK RIVER ROAD

Fair

Over: HUNTER CREEK

MILE POINT 9.6, Matanuska-Susitna, AK

Built 1995 Load: 33.0 t ADT: 230

PARKS HIGHWAY

Fair

Over: TROUBLESOME CREEK

MILE POINT 102.9, Matanuska-Susitna, AK

Built 1970 Load: 35.3 t ADT: 1,120

GLENN HIGHWAY

Fair

Over: MATANUSKA RIV NORTHBOUND

MILE POINT 30.4, Matanuska-Susitna, AK

Built 1965 Load: 37.4 t ADT: 13,300

IRR:CHICKALOON FRK

Fair

Over: CHICKALOON RIVER NO. 1

MILE POINT 0.5, Matanuska-Susitna, AK

Built 1982 Load: 40.7 t ADT: 40

PARKS HIGHWAY

Fair

Over: GLENN PARKS OVERHEAD NB

MILE POINT 0.7, Matanuska-Susitna, AK

Built 2004 Load: 43.5 t ADT: 3,272

FISHHOOK/PALMER RD

Good

Over: LITTLE SUSITNA RIVER

MILE POINT 8.5, Matanuska-Susitna, AK

Built 1991 Load: 38.5 t ADT: 1,030

IRR:CHICKALOON FRK

Good

Over: CHICKALOON RIVER NO. 2

MILE POINT 1.1, Matanuska-Susitna, AK

Built 1982 Load: 40.7 t ADT: 40

PARKS HIGHWAY

Good

Over: LITTLE SUSITNA RIVER

MILE POINT 21.8, Matanuska-Susitna, AK

Built 2004 Load: 49.1 t ADT: 4,700

PARKS HIGHWAY

Good

Over: MIDDLE FORK CHULITNA RIV

MILE POINT 160.3, Matanuska-Susitna, AK

Built 2016 Load: 59.1 t ADT: 900

DENALI HIGHWAY

Poor

Over: SUSITNA RIVER

MILE POINT 79.5, Matanuska-Susitna, AK

Built 1956 Load: 21.1 t ADT: 60

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

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