US Bridges

Mo 135 S over Coal Bank CR

Fair

Cooper County, Missouri · S 8 T 47 N R 18 W · Structure no. 9712

Built
1940
85 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
846
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 135 S over Coal Bank CR is a concrete continuous culvert carrying Mo 135 S over Coal Bank CR in Cooper County, Missouri. It was built in 1940, so it is 85 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 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 846 vehicles a day, roughly 12% of them trucks, projected to reach 1,142 by 2044. The structure is 21 ft (6.5 m) long and 31 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesMo 135 S
CrossesCoal Bank CR
LocationS 8 T 47 N R 18 W
RouteState Highway 135
CountyCooper County
StateMissouri
Coordinates38.85128, -92.92326
Functional classRural Major Collector

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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length21 ft (6.5 m)
Longest span10 ft (3 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic846 (2024)
Projected traffic1,142 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 135 S over Coal Bank CR built?

It was built in 1940, making it 85 years old in 2025.

What condition is Mo 135 S over Coal Bank 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 July 2023.

How much traffic does Mo 135 S over Coal Bank CR carry?

About 846 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Mo 135 S over Coal Bank CR?

The structure is 21 ft (6.5 m) long with a longest span of 10 ft (3 m) and a deck 31 ft wide.

Who owns Mo 135 S over Coal Bank CR?

It is owned by the State Highway Agency.