US Bridges

186th ST over Crooked Rvr

Good

Ray County, Missouri · S 5 T 53 N R 28 W · Structure no. 32247

Built
2008
17 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
113 ft
2 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

186th ST over Crooked Rvr is a prestressed concrete stringer/multi-beam or girder carrying 186th ST over Crooked Rvr in Ray County, Missouri. It was built in 2008, so it is 17 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, roughly 10% of them trucks, projected to reach 54 by 2043. The structure is 113 ft (34.3 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries186th ST
CrossesCrooked Rvr
LocationS 5 T 53 N R 28 W
RouteCounty Highway 51
CountyRay County
StateMissouri
Coordinates39.42761, -94.07544
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length113 ft (34.3 m)
Longest span75 ft (22.9 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic54 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 186th ST over Crooked Rvr built?

It was built in 2008, making it 17 years old in 2025.

What condition is 186th ST over Crooked Rvr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does 186th ST over Crooked Rvr carry?

About 40 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 186th ST over Crooked Rvr?

The structure is 113 ft (34.3 m) long with a longest span of 75 ft (22.9 m) and a deck 23 ft wide.

Who owns 186th ST over Crooked Rvr?

It is owned by the County Highway Agency.