US Bridges

310 ST over Trib of Wildcat CR

Fair

Nodaway County, Missouri · S 9 T 63 N R 33 W · Structure no. 14483

Built
1946
79 years old, rebuilt 1988
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

310 ST over Trib of Wildcat CR is a steel stringer/multi-beam or girder carrying 310 ST over Trib of Wildcat CR in Nodaway County, Missouri. It was built in 1946 and reconstructed in 1988, so it is 79 years old, older than the Missouri average of 45.1 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 50 ft (15.2 m) long and 20 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries310 ST
CrossesTrib of Wildcat CR
LocationS 9 T 63 N R 33 W
RouteCounty Highway 686
Coordinates40.27121, -94.62826
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.5 US tons
Inventory rating40.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length50 ft (15.2 m)
Longest span46 ft (14 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 310 ST over Trib of Wildcat CR built?

It was built in 1946, making it 79 years old in 2025. It was reconstructed in 1988.

What condition is 310 ST over Trib of Wildcat CR 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 January 2025.

How much traffic does 310 ST over Trib of Wildcat CR carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 310 ST over Trib of Wildcat CR?

The structure is 50 ft (15.2 m) long with a longest span of 46 ft (14 m) and a deck 20 ft wide.

Who owns 310 ST over Trib of Wildcat CR?

It is owned by the County Highway Agency.