US Bridges

Prairie RD over Br of Moniteau CR

Fair

Cooper County, Missouri · S 1 T 46 N R 16 W · Structure no. 21859

Built
1940
85 years old, rebuilt 1999
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
1 main span
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

Prairie RD over Br of Moniteau CR is a steel stringer/multi-beam or girder carrying Prairie RD over Br of Moniteau CR in Cooper County, Missouri. It was built in 1940 and reconstructed in 1999, so it is 85 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 38 ft (11.6 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesPrairie RD
CrossesBr of Moniteau CR
LocationS 1 T 46 N R 16 W
RouteCounty Highway 327
CountyCooper County
StateMissouri
Coordinates38.78239, -92.62619
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.5 US tons
Inventory rating46.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length38 ft (11.6 m)
Longest span35 ft (10.8 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic39 by 2044
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 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 Prairie RD over Br of Moniteau CR built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1999.

What condition is Prairie RD over Br of Moniteau 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 December 2023.

How much traffic does Prairie RD over Br of Moniteau CR carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Prairie RD over Br of Moniteau CR?

The structure is 38 ft (11.6 m) long with a longest span of 35 ft (10.8 m) and a deck 18 ft wide.

Who owns Prairie RD over Br of Moniteau CR?

It is owned by the County Highway Agency.