US Bridges

County RD 40 over White Oak CR

Good

Jasper County, Missouri · S 5 T 28 N R 29 W · Structure no. 23863

Built
1998
27 years old
Condition
Good
inspected December 2024
Type
Slab
Concrete Continuous
Length
123 ft
3 main spans
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 40 over White Oak CR is a concrete continuous slab carrying County RD 40 over White Oak CR in Jasper County, Missouri. It was built in 1998, so it is 27 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2044. The structure is 123 ft (37.5 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCounty RD 40
CrossesWhite Oak CR
LocationS 5 T 28 N R 29 W
RouteCounty Highway 438
Coordinates37.16909, -94.12836
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.4 US tons
Inventory rating47.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length123 ft (37.5 m)
Longest span48 ft (14.6 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic75 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 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 County RD 40 over White Oak CR built?

It was built in 1998, making it 27 years old in 2025.

What condition is County RD 40 over White Oak CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does County RD 40 over White Oak CR carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 40 over White Oak CR?

The structure is 123 ft (37.5 m) long with a longest span of 48 ft (14.6 m) and a deck 25 ft wide.

Who owns County RD 40 over White Oak CR?

It is owned by the County Highway Agency.