US Bridges

Old HWY 40 over Thomas Br

Fair

Cooper County, Missouri · S 9 T 48 N R 17 W · Structure no. 22170

Built
1930
95 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
1,000
2024 count
Owner
County
County Highway Agency

About this bridge

Old HWY 40 over Thomas Br is a concrete culvert carrying Old HWY 40 over Thomas Br in Cooper 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,300 by 2044. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesOld HWY 40
CrossesThomas Br
LocationS 9 T 48 N R 17 W
RouteCounty Highway 343
CountyCooper County
StateMissouri
Coordinates38.94178, -92.79489
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2024)
Projected traffic1,300 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Old HWY 40 over Thomas Br built?

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

What condition is Old HWY 40 over Thomas Br 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 2023.

How much traffic does Old HWY 40 over Thomas Br carry?

About 1,000 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Old HWY 40 over Thomas Br?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns Old HWY 40 over Thomas Br?

It is owned by the County Highway Agency.