US Bridges

Seward Highway over Clear Creek (seward Hwy)

Good

Kenai Peninsula Borough, Alaska · Mile Point 3.8 · Structure no. 0599

Built
1967
58 years old, rebuilt 2002
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
82 ft
1 main span
Daily traffic
3,510
2020 count
Owner
State
State Highway Agency

About this bridge

Seward Highway over Clear Creek (seward Hwy) is a steel stringer/multi-beam or girder carrying Seward Highway over Clear Creek (seward Hwy) in Kenai Peninsula Borough, Alaska. It was built in 1967 and reconstructed in 2002, so it is 58 years old, older than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,510 vehicles a day, roughly 6% of them trucks, projected to reach 4,560 by 2039. The structure is 82 ft (24.9 m) long and 56 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSeward Highway
CrossesClear Creek (seward Hwy)
LocationMile Point 3.8
RouteState Highway 31
StateAlaska
Coordinates60.15194, -149.42056
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating34.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length82 ft (24.9 m)
Longest span79 ft (24.1 m)
Deck width56 ft (17.2 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,510 (2020)
Projected traffic4,560 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Seward Highway over Clear Creek (seward Hwy) built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2002.

What condition is Seward Highway over Clear Creek (seward Hwy) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Seward Highway over Clear Creek (seward Hwy) carry?

About 3,510 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Seward Highway over Clear Creek (seward Hwy)?

The structure is 82 ft (24.9 m) long with a longest span of 79 ft (24.1 m) and a deck 56 ft wide.

Who owns Seward Highway over Clear Creek (seward Hwy)?

It is owned by the State Highway Agency.