US Bridges

Chakok Road over North Fork Anchor River

FairPosted for load

Kenai Peninsula Borough, Alaska · Mile Point 0.1 · Structure no. 0979

Built
1987
38 years old
Condition
Fair
inspected August 2023
Type
Truss - Thru
Steel
Length
74 ft
1 main span
Daily traffic
10
2018 count
Owner
County
County Highway Agency

About this bridge

Chakok Road over North Fork Anchor River is a steel truss - thru carrying Chakok Road over North Fork Anchor River in Kenai Peninsula Borough, Alaska. It was built in 1987, so it is 38 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 5 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 10 vehicles a day, roughly 1% of them trucks, projected to reach 12 by 2035. The structure is 74 ft (22.5 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesChakok Road
CrossesNorth Fork Anchor River
LocationMile Point 0.1
RouteState Highway NSPCY
CountyKenai Peninsula Borough
StateAlaska
Coordinates59.79444, -151.73111
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.7 US tons
Inventory rating18.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 15
Structure length74 ft (22.5 m)
Longest span70 ft (21.4 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2018)
Projected traffic12 by 2035
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 Chakok Road over North Fork Anchor River built?

It was built in 1987, making it 38 years old in 2025.

What condition is Chakok Road over North Fork Anchor River 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 Chakok Road over North Fork Anchor River carry?

About 10 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Chakok Road over North Fork Anchor River?

The structure is 74 ft (22.5 m) long with a longest span of 70 ft (21.4 m) and a deck 20 ft wide.

Who owns Chakok Road over North Fork Anchor River?

It is owned by the County Highway Agency.