US Bridges

Seward Highway over Grouse Creek No. 2

Fair

Kenai Peninsula Borough, Alaska · Mile Point 7.9 · Structure no. 4003

Built
1937
88 years old, rebuilt 1951
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
2,180
2020 count
Owner
State
State Highway Agency

About this bridge

Seward Highway over Grouse Creek No. 2 is a concrete culvert carrying Seward Highway over Grouse Creek No. 2 in Kenai Peninsula Borough, Alaska. It was built in 1937 and reconstructed in 1951, so it is 88 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 22 ft (6.7 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSeward Highway
CrossesGrouse Creek No. 2
LocationMile Point 7.9
RouteState Highway 31
StateAlaska
Coordinates60.21167, -149.37
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 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 evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.1 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 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
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 Grouse Creek No. 2 built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1951.

What condition is Seward Highway over Grouse Creek No. 2 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 Grouse Creek No. 2 carry?

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

How long is Seward Highway over Grouse Creek No. 2?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m).

Who owns Seward Highway over Grouse Creek No. 2?

It is owned by the State Highway Agency.