US Bridges

4508 over Walnut CR

Fair

Bates County, Missouri · S 16 T 39 N R 33 W · Structure no. 24500

Built
2000
25 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
66 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

4508 over Walnut CR is a steel stringer/multi-beam or girder carrying 4508 over Walnut CR in Bates County, Missouri. It was built in 2000, so it is 25 years old, younger 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 6 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2043. The structure is 66 ft (20.1 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries4508
CrossesWalnut CR
LocationS 16 T 39 N R 33 W
RouteCounty Highway 501
CountyBates County
StateMissouri
Coordinates38.16021, -94.55624
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length66 ft (20.1 m)
Longest span63 ft (19.2 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic39 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 4508 over Walnut CR built?

It was built in 2000, making it 25 years old in 2025.

What condition is 4508 over Walnut 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 4508 over Walnut CR carry?

About 30 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 4508 over Walnut CR?

The structure is 66 ft (20.1 m) long with a longest span of 63 ft (19.2 m) and a deck 25 ft wide.

Who owns 4508 over Walnut CR?

It is owned by the County Highway Agency.