US Bridges

Mo 151 S over Long Br

Fair

Audrain County, Missouri · S 36 T 52 N R 12 W · Structure no. 5337

Built
1930
95 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
96 ft
1 main span
Daily traffic
330
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 151 S over Long Br is a concrete tee beam carrying Mo 151 S over Long Br in Audrain 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 330 vehicles a day, roughly 16% of them trucks, projected to reach 479 by 2044. The structure is 96 ft (29.3 m) long and 23 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesMo 151 S
CrossesLong Br
LocationS 36 T 52 N R 12 W
RouteState Highway 151
CountyAudrain County
StateMissouri
Coordinates39.24257, -92.20532
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.7 US tons
Inventory rating18.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length96 ft (29.3 m)
Longest span40 ft (12.2 m)
Deck width23 ft (7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2024)
Projected traffic479 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 151 S over Long Br built?

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

What condition is Mo 151 S over Long 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 October 2023.

How much traffic does Mo 151 S over Long Br carry?

About 330 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is Mo 151 S over Long Br?

The structure is 96 ft (29.3 m) long with a longest span of 40 ft (12.2 m) and a deck 23 ft wide.

Who owns Mo 151 S over Long Br?

It is owned by the State Highway Agency.