US Bridges

Munson Slough RD over Munson Slough

Fair

Fairbanks North Star Borough, Alaska · Mile Point 0.4 · Structure no. 2126

Built
1958
67 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
10
2018 count
Owner
State
State Highway Agency

About this bridge

Munson Slough RD over Munson Slough is a steel stringer/multi-beam or girder carrying Munson Slough RD over Munson Slough in Fairbanks North Star Borough, Alaska. It was built in 1958, so it is 67 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.

It carries about 10 vehicles a day, roughly 1% of them trucks, projected to reach 14 by 2035. The structure is 25 ft (7.7 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMunson Slough RD
CrossesMunson Slough
LocationMile Point 0.4
RouteState Highway 0_
StateAlaska
Coordinates64.47503, -146.96824
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.2 US tons
Inventory rating29.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span24 ft (7.3 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2018)
Projected traffic14 by 2035
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Munson Slough RD over Munson Slough built?

It was built in 1958, making it 67 years old in 2025.

What condition is Munson Slough RD over Munson Slough 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 July 2024.

How much traffic does Munson Slough RD over Munson Slough carry?

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

How long is Munson Slough RD over Munson Slough?

The structure is 25 ft (7.7 m) long with a longest span of 24 ft (7.3 m) and a deck 25 ft wide.

Who owns Munson Slough RD over Munson Slough?

It is owned by the State Highway Agency.