US Bridges

Flat Rock RD over Roubidoux

Good

Texas County, Missouri · S 4 T 31 N R 11 W · Structure no. 30714

Built
2001
24 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

Flat Rock RD over Roubidoux is a concrete continuous slab carrying Flat Rock RD over Roubidoux in Texas County, Missouri. It was built in 2001, so it is 24 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 24 by 2044. The structure is 22 ft (6.7 m) long and 11 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesFlat Rock RD
CrossesRoubidoux
LocationS 4 T 31 N R 11 W
RouteCounty Highway 314
CountyTexas County
StateMissouri
Coordinates37.42199, -92.14776
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width11 ft (3.3 m)
Roadway width11 ft (3.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic24 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$162,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Flat Rock RD over Roubidoux built?

It was built in 2001, making it 24 years old in 2025.

What condition is Flat Rock RD over Roubidoux 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 November 2023.

How much traffic does Flat Rock RD over Roubidoux carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Flat Rock RD over Roubidoux?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 11 ft wide.

Who owns Flat Rock RD over Roubidoux?

It is owned by the County Highway Agency and maintained by the Town or Township Highway Agency.