US Bridges

SW 236th ST over Roberts Br

Fair

Clinton County, Missouri · S 5 T 54 N R 32 W · Structure no. 31658

Built
2004
21 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete Continuous
Length
41 ft
2 main spans
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

SW 236th ST over Roberts Br is a concrete continuous culvert carrying SW 236th ST over Roberts Br in Clinton County, Missouri. It was built in 2004, so it is 21 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 35 by 2043. The structure is 41 ft (12.4 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSW 236th ST
CrossesRoberts Br
LocationS 5 T 54 N R 32 W
RouteCounty Highway 287
CountyClinton County
StateMissouri
Coordinates39.52083, -94.51343
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.5 US tons
Inventory rating38.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length41 ft (12.4 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic35 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 236th ST over Roberts Br built?

It was built in 2004, making it 21 years old in 2025.

What condition is SW 236th ST over Roberts 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 2024.

How much traffic does SW 236th ST over Roberts Br carry?

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

How long is SW 236th ST over Roberts Br?

The structure is 41 ft (12.4 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns SW 236th ST over Roberts Br?

It is owned by the County Highway Agency.