US Bridges

County RD 133 over Trib of Long Br

Fair

Audrain County, Missouri · S 25 T 52 N R 13 W · Structure no. 12696

Built
1997
28 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
35
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 133 over Trib of Long Br is a concrete slab carrying County RD 133 over Trib of Long Br in Audrain County, Missouri. It was built in 1997, so it is 28 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2043. The structure is 33 ft (10.1 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCounty RD 133
CrossesTrib of Long Br
LocationS 25 T 52 N R 13 W
RouteCounty Highway 17
CountyAudrain County
StateMissouri
Coordinates39.28964, -92.20239
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83.3 US tons
Inventory rating47.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width26 ft (7.8 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2023)
Projected traffic44 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County RD 133 over Trib of Long Br built?

It was built in 1997, making it 28 years old in 2025.

What condition is County RD 133 over Trib of 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 April 2023.

How much traffic does County RD 133 over Trib of Long Br carry?

About 35 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 133 over Trib of Long Br?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns County RD 133 over Trib of Long Br?

It is owned by the County Highway Agency.