US Bridges

Mo 7 S over Black Oak CR

Fair

Henry County, Missouri · S 19 T 43 N R 28 W · Structure no. 5654

Built
1932
93 years old, rebuilt 1991
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
16,029
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 7 S over Black Oak CR is a concrete continuous culvert carrying Mo 7 S over Black Oak CR in Henry County, Missouri. It was built in 1932 and reconstructed in 1991, 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 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 16,029 vehicles a day, roughly 23% of them trucks, projected to reach 28,051 by 2044. The structure is 28 ft (8.4 m) long. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesMo 7 S
CrossesBlack Oak CR
LocationS 19 T 43 N R 28 W
RouteState Highway 7
CountyHenry County
StateMissouri
Coordinates38.49551, -94.0611
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.4 US tons
Inventory rating46.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.4 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,029 (2024)
Projected traffic28,051 by 2044
Trucks23%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 7 S over Black Oak CR built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1991.

What condition is Mo 7 S over Black Oak 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 Mo 7 S over Black Oak CR carry?

About 16,029 vehicles per day (2024 count), of which roughly 23% are trucks.

How long is Mo 7 S over Black Oak CR?

The structure is 28 ft (8.4 m) long with a longest span of 12 ft (3.7 m).

Who owns Mo 7 S over Black Oak CR?

It is owned by the State Highway Agency.