US Bridges

Seward Highway over Seward HWY Oh Golden Fin

Fair

Kenai Peninsula Borough, Alaska · Mile Point 11.9 · Structure no. 4006

Built
1979
46 years old, rebuilt 1999
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
52 ft
1 main span
Daily traffic
2,180
2020 count
Owner
State
State Highway Agency

About this bridge

Seward Highway over Seward HWY Oh Golden Fin is a steel culvert carrying Seward Highway over Seward HWY Oh Golden Fin in Kenai Peninsula Borough, Alaska. It was built in 1979 and reconstructed in 1999, so it is 46 years old, older than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,180 vehicles a day, roughly 6% of them trucks, projected to reach 3,660 by 2039. The structure is 52 ft (15.9 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSeward Highway
CrossesSeward HWY Oh Golden Fin
LocationMile Point 11.9
RouteState Highway 31
StateAlaska
Coordinates60.25806, -149.35111
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 20
Structure length52 ft (15.9 m)
Longest span25 ft (7.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,180 (2020)
Projected traffic3,660 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Seward Highway over Seward HWY Oh Golden Fin built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 1999.

What condition is Seward Highway over Seward HWY Oh Golden Fin in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does Seward Highway over Seward HWY Oh Golden Fin carry?

About 2,180 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Seward Highway over Seward HWY Oh Golden Fin?

The structure is 52 ft (15.9 m) long with a longest span of 25 ft (7.7 m).

Who owns Seward Highway over Seward HWY Oh Golden Fin?

It is owned by the State Highway Agency.