US Bridges

Rt O E over Big Cobb CR

Fair

Laclede County, Missouri · S 5 T 32 N R 14 W · Structure no. 9873

Built
1949
76 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
493
2024 count
Owner
State
State Highway Agency

About this bridge

Rt O E over Big Cobb CR is a concrete continuous culvert carrying Rt O E over Big Cobb CR in Laclede County, Missouri. It was built in 1949, so it is 76 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 493 vehicles a day, roughly 12% of them trucks, projected to reach 740 by 2044. The structure is 38 ft (11.6 m) long and 22 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesRt O E
CrossesBig Cobb CR
LocationS 5 T 32 N R 14 W
RouteState Highway 0O
CountyLaclede County
StateMissouri
Coordinates37.51167, -92.49247
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 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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 10
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic493 (2024)
Projected traffic740 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$306,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt O E over Big Cobb CR built?

It was built in 1949, making it 76 years old in 2025.

What condition is Rt O E over Big Cobb 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 August 2023.

How much traffic does Rt O E over Big Cobb CR carry?

About 493 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Rt O E over Big Cobb CR?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 22 ft wide.

Who owns Rt O E over Big Cobb CR?

It is owned by the State Highway Agency.