US Bridges

County RD 20 over Trib White Oak CR

Fair

Jasper County, Missouri · S 34 T 29 N R 29 W · Structure no. 23917

Built
1930
95 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
26 ft
2 main spans
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 20 over Trib White Oak CR is a concrete slab carrying County RD 20 over Trib White Oak CR in Jasper County, Missouri. It was built in 1930, so it is 95 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 45 by 2044. The structure is 26 ft (7.9 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCounty RD 20
CrossesTrib White Oak CR
LocationS 34 T 29 N R 29 W
RouteCounty Highway 443
CountyJasper County
StateMissouri
Coordinates37.18075, -94.09173
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.7 US tons
Inventory rating18.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length26 ft (7.9 m)
Longest span10 ft (3 m)
Deck width22 ft (6.6 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic45 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 20 over Trib White Oak CR built?

It was built in 1930, making it 95 years old in 2025.

What condition is County RD 20 over Trib White Oak 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 December 2024.

How much traffic does County RD 20 over Trib White Oak CR carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 20 over Trib White Oak CR?

The structure is 26 ft (7.9 m) long with a longest span of 10 ft (3 m) and a deck 22 ft wide.

Who owns County RD 20 over Trib White Oak CR?

It is owned by the County Highway Agency.