US Bridges

SW51 over Cooper CR

Fair

Henry County, Missouri · S 26 T 40 N R 26 W · Structure no. 24896

Built
1925
100 years old
Condition
Fair
inspected March 2023
Type
Truss - Thru
Steel
Length
84 ft
1 main span
Daily traffic
55
2023 count
Owner
County
County Highway Agency

About this bridge

SW51 over Cooper CR is a steel truss - thru carrying SW51 over Cooper CR in Henry County, Missouri. It was built in 1925, so it is 100 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 55 vehicles a day, roughly 10% of them trucks, projected to reach 77 by 2043. The structure is 84 ft (25.6 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSW51
CrossesCooper CR
LocationS 26 T 40 N R 26 W
RouteCounty Highway 571
CountyHenry County
StateMissouri
Coordinates38.22595, -93.77019
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length84 ft (25.6 m)
Longest span84 ft (25.6 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2023)
Projected traffic77 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 SW51 over Cooper CR built?

It was built in 1925, making it 100 years old in 2025.

What condition is SW51 over Cooper 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 SW51 over Cooper CR carry?

About 55 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SW51 over Cooper CR?

The structure is 84 ft (25.6 m) long with a longest span of 84 ft (25.6 m) and a deck 20 ft wide.

Who owns SW51 over Cooper CR?

It is owned by the County Highway Agency.