US Bridges

Kenai Spur HWY Ext over Otter Creek

FairPosted for load

Kenai Peninsula Borough, Alaska · NE of Nikiski · Structure no. 2389

Built
2007
18 years old
Condition
Fair
inspected October 2023
Type
Other
Steel
Length
53 ft
3 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

Kenai Spur HWY Ext over Otter Creek is a steel other carrying Kenai Spur HWY Ext over Otter Creek in Kenai Peninsula Borough, Alaska. It was built in 2007, so it is 18 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 1% of them trucks, projected to reach 40 by 2040. The structure is 53 ft (16.1 m) long and 14 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesKenai Spur HWY Ext
CrossesOtter Creek
LocationNE of Nikiski
RouteCounty Highway 0_
StateAlaska
Coordinates60.87141, -150.82523
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.4 US tons
Inventory rating36.8 US tons

Structure

Structure typeOther
MaterialSteel
DeckConcrete, precast panels
Main spans3
Design loadUnknown
Structure length53 ft (16.1 m)
Longest span53 ft (16.1 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic40 by 2040
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Kenai Spur HWY Ext over Otter Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Kenai Spur HWY Ext over Otter Creek 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 October 2023.

How much traffic does Kenai Spur HWY Ext over Otter Creek carry?

About 20 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Kenai Spur HWY Ext over Otter Creek?

The structure is 53 ft (16.1 m) long with a longest span of 53 ft (16.1 m) and a deck 14 ft wide.

Who owns Kenai Spur HWY Ext over Otter Creek?

It is owned by the County Highway Agency.