US Bridges

Rt W S over Rock Br

Fair

Warren County, Missouri · S 13 T 48 N R 3 W · Structure no. 7802

Built
1955
70 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
1,548
2024 count
Owner
State
State Highway Agency

About this bridge

Rt W S over Rock Br is a concrete continuous culvert carrying Rt W S over Rock Br in Warren County, Missouri. It was built in 1955, so it is 70 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 1,548 vehicles a day, roughly 18% of them trucks, projected to reach 3,096 by 2044. The structure is 21 ft (6.4 m) long and 30 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesRt W S
CrossesRock Br
LocationS 13 T 48 N R 3 W
RouteState Highway 0W
CountyWarren County
StateMissouri
Coordinates38.92487, -91.20721
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating28.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,548 (2024)
Projected traffic3,096 by 2044
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Rt W S over Rock Br built?

It was built in 1955, making it 70 years old in 2025.

What condition is Rt W S over Rock Br 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 November 2024.

How much traffic does Rt W S over Rock Br carry?

About 1,548 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Rt W S over Rock Br?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 30 ft wide.

Who owns Rt W S over Rock Br?

It is owned by the State Highway Agency.