US Bridges

Kenai Spur HWY Ext over Lief Creek

FairPosted for load

Kenai Peninsula Borough, Alaska · NE of Nikiski · Structure no. 2309

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

About this bridge

Kenai Spur HWY Ext over Lief Creek is a steel other carrying Kenai Spur HWY Ext over Lief 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 41 ft (12.6 m) long and 10 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesKenai Spur HWY Ext
CrossesLief Creek
LocationNE of Nikiski
RouteCounty Highway 0_
CountyKenai Peninsula Borough
StateAlaska
Coordinates60.84137, -150.92172
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeOther
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length41 ft (12.6 m)
Longest span31 ft (9.6 m)
Deck width10 ft (3 m)
Roadway width10 ft (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 Lief Creek built?

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

What condition is Kenai Spur HWY Ext over Lief 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 Lief Creek carry?

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

How long is Kenai Spur HWY Ext over Lief Creek?

The structure is 41 ft (12.6 m) long with a longest span of 31 ft (9.6 m) and a deck 10 ft wide.

Who owns Kenai Spur HWY Ext over Lief Creek?

It is owned by the County Highway Agency.