US Bridges

Prairie RD over Br of Big CR

FairPosted for load

Cass County, Missouri · S 11 T 46 N R 32 W · Structure no. 13334

Built
1988
37 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
349
2024 count
Owner
County
County Highway Agency

About this bridge

Prairie RD over Br of Big CR is a steel stringer/multi-beam or girder carrying Prairie RD over Br of Big CR in Cass County, Missouri. It was built in 1988, so it is 37 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 349 vehicles a day, roughly 5% of them trucks, projected to reach 558 by 2044. The structure is 31 ft (9.4 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesPrairie RD
CrossesBr of Big CR
LocationS 11 T 46 N R 32 W
RouteCounty Highway 35
Coordinates38.80604, -94.42021
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
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 rating17.9 US tons
Inventory rating8.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic349 (2024)
Projected traffic558 by 2044
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$359,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Prairie RD over Br of Big CR built?

It was built in 1988, making it 37 years old in 2025.

What condition is Prairie RD over Br of Big 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 April 2023.

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

About 349 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Prairie RD over Br of Big CR?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Prairie RD over Br of Big CR?

It is owned by the County Highway Agency.