US Bridges

Rt Ww S over Coon CR Br

Fair

St. Clair County, Missouri · S 21 T 37 N R 25 W · Structure no. 8318

Built
1963
62 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
100
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Ww S over Coon CR Br is a concrete continuous culvert carrying Rt Ww S over Coon CR Br in St. Clair County, Missouri. It was built in 1963, so it is 62 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 100 vehicles a day, roughly 9% of them trucks, projected to reach 130 by 2044. The structure is 32 ft (9.9 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesRt Ww S
CrossesCoon CR Br
LocationS 21 T 37 N R 25 W
RouteState Highway 0WW
CountySt. Clair County
StateMissouri
Coordinates37.96029, -93.67783
Functional classRural Minor 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating41.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length32 ft (9.9 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic130 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Ww S over Coon CR Br built?

It was built in 1963, making it 62 years old in 2025.

What condition is Rt Ww S over Coon CR 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 March 2023.

How much traffic does Rt Ww S over Coon CR Br carry?

About 100 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Rt Ww S over Coon CR Br?

The structure is 32 ft (9.9 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Rt Ww S over Coon CR Br?

It is owned by the State Highway Agency.