US Bridges

6508 over Walnut CR

FairPosted for load

Bates County, Missouri · S 28 T 39 N R 33 W · Structure no. 25028

Built
1900
125 years old, rebuilt 1981
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
89 ft
3 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

6508 over Walnut CR is a steel continuous stringer/multi-beam or girder carrying 6508 over Walnut CR in Bates County, Missouri. It was built in 1900 and reconstructed in 1981, so it is 125 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. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2043. The structure is 89 ft (27.1 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries6508
CrossesWalnut CR
LocationS 28 T 39 N R 33 W
RouteCounty Highway 601
CountyBates County
StateMissouri
Coordinates38.13147, -94.56595
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating15.9 US tons
Inventory rating9.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length89 ft (27.1 m)
Longest span39 ft (11.9 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.8 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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$655,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 6508 over Walnut CR built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1981.

What condition is 6508 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 6508 over Walnut CR carry?

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

How long is 6508 over Walnut CR?

The structure is 89 ft (27.1 m) long with a longest span of 39 ft (11.9 m) and a deck 20 ft wide.

Who owns 6508 over Walnut CR?

It is owned by the County Highway Agency.