US Bridges

Mo 8 E over Manion Br

Fair

Washington County, Missouri · S 13 T 37 N R 1 W · Structure no. 5381

Built
1932
93 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
1,589
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 8 E over Manion Br is a concrete continuous culvert carrying Mo 8 E over Manion Br in Washington County, Missouri. It was built in 1932, so it is 93 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 1,589 vehicles a day, roughly 23% of them trucks, projected to reach 3,019 by 2044. The structure is 31 ft (9.3 m) long and 40 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

Open in Google Maps
CarriesMo 8 E
CrossesManion Br
LocationS 13 T 37 N R 1 W
RouteState Highway 8
CountyWashington County
StateMissouri
Coordinates37.92245, -90.98395
Functional classRural Principal Arterial - Other

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 inspectionJune 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating70.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length31 ft (9.3 m)
Longest span12 ft (3.7 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,589 (2024)
Projected traffic3,019 by 2044
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 km)
TollOn a free road
National Highway SystemYes

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 Mo 8 E over Manion Br built?

It was built in 1932, making it 93 years old in 2025.

What condition is Mo 8 E over Manion 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 June 2024.

How much traffic does Mo 8 E over Manion Br carry?

About 1,589 vehicles per day (2024 count), of which roughly 23% are trucks.

How long is Mo 8 E over Manion Br?

The structure is 31 ft (9.3 m) long with a longest span of 12 ft (3.7 m) and a deck 40 ft wide.

Who owns Mo 8 E over Manion Br?

It is owned by the State Highway Agency.