US Bridges

Emerson RD over North Cobb CR

Fair

Laclede County, Missouri · S 28 T 34 N R 15 W · Structure no. 31291

Built
2004
21 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Emerson RD over North Cobb CR is a concrete culvert carrying Emerson RD over North Cobb CR in Laclede 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 70 by 2043. The structure is 28 ft (8.4 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesEmerson RD
CrossesNorth Cobb CR
LocationS 28 T 34 N R 15 W
RouteCounty Highway 192
CountyLaclede County
StateMissouri
Coordinates37.63021, -92.58644
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length28 ft (8.4 m)
Longest span13 ft (4.1 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic70 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byOther Local 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 Emerson RD over North Cobb CR built?

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

What condition is Emerson RD over North 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 March 2023.

How much traffic does Emerson RD over North Cobb CR carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Emerson RD over North Cobb CR?

The structure is 28 ft (8.4 m) long with a longest span of 13 ft (4.1 m) and a deck 22 ft wide.

Who owns Emerson RD over North Cobb CR?

It is owned by the County Highway Agency and maintained by the Other Local Agency.