US Bridges

Rt Bb E over Lost CR

Fair

Audrain County, Missouri · S 31 T 51 N R 5 W · Structure no. 7892

Built
1955
70 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
31 ft
3 main spans
Daily traffic
411
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Bb E over Lost CR is a concrete continuous culvert carrying Rt Bb E over Lost CR in Audrain County, Missouri. It was built in 1955, so it is 70 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 411 vehicles a day, roughly 20% of them trucks, projected to reach 596 by 2044. The structure is 31 ft (9.6 m) long and 29 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesRt Bb E
CrossesLost CR
LocationS 31 T 51 N R 5 W
RouteState Highway 0BB
CountyAudrain County
StateMissouri
Coordinates39.15245, -91.51079
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 inspectionOctober 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating50.6 US tons
Inventory rating30.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 10
Structure length31 ft (9.6 m)
Longest span10 ft (3 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic411 (2024)
Projected traffic596 by 2044
Trucks20%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt Bb E over Lost CR built?

It was built in 1955, making it 70 years old in 2025.

What condition is Rt Bb E over Lost 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 October 2023.

How much traffic does Rt Bb E over Lost CR carry?

About 411 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is Rt Bb E over Lost CR?

The structure is 31 ft (9.6 m) long with a longest span of 10 ft (3 m) and a deck 29 ft wide.

Who owns Rt Bb E over Lost CR?

It is owned by the State Highway Agency.