US Bridges

Old Seward Highway over Rabbit Creek

Good

Anchorage Municipality, Alaska · Mile Point 0.1 · Structure no. 4096

Built
1978
47 years old
Condition
Good
inspected June 2023
Type
Culvert
Steel
Length
24 ft
2 main spans
Daily traffic
10,200
2020 count
Owner
State
State Highway Agency

About this bridge

Old Seward Highway over Rabbit Creek is a steel culvert carrying Old Seward Highway over Rabbit Creek in Anchorage Municipality, Alaska. It was built in 1978, so it is 47 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,200 vehicles a day, roughly 5% of them trucks, projected to reach 11,100 by 2039. The structure is 24 ft (7.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesOld Seward Highway
CrossesRabbit Creek
LocationMile Point 0.1
RouteState Highway 0
StateAlaska
Coordinates61.08361, -149.82611
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable 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 spans2
Design loadH 20
Structure length24 ft (7.2 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,200 (2020)
Projected traffic11,100 by 2039
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Old Seward Highway over Rabbit Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Old Seward Highway over Rabbit Creek 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 June 2023.

How much traffic does Old Seward Highway over Rabbit Creek carry?

About 10,200 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Old Seward Highway over Rabbit Creek?

The structure is 24 ft (7.2 m) long with a longest span of 10 ft (3 m).

Who owns Old Seward Highway over Rabbit Creek?

It is owned by the State Highway Agency.