US Bridges

US 54 E over Coon CR

Fair

St. Clair County, Missouri · S 7 T 36 N R 24 W · Structure no. 3628

Built
1985
40 years old, rebuilt 2008
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
44 ft
3 main spans
Daily traffic
2,515
2024 count
Owner
State
State Highway Agency

About this bridge

US 54 E over Coon CR is a concrete continuous culvert carrying US 54 E over Coon CR in St. Clair County, Missouri. It was built in 1985 and reconstructed in 2008, so it is 40 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.

It carries about 2,515 vehicles a day, roughly 20% of them trucks, projected to reach 4,401 by 2044. The structure is 44 ft (13.5 m) long. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesUS 54 E
CrossesCoon CR
LocationS 7 T 36 N R 24 W
RouteU.S. Route 54
CountySt. Clair County
StateMissouri
Coordinates37.89127, -93.62539
Functional classRural Principal Arterial - Other

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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length44 ft (13.5 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,515 (2024)
Projected traffic4,401 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 54 E over Coon CR built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2008.

What condition is US 54 E over Coon 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 March 2023.

How much traffic does US 54 E over Coon CR carry?

About 2,515 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is US 54 E over Coon CR?

The structure is 44 ft (13.5 m) long with a longest span of 13 ft (4 m).

Who owns US 54 E over Coon CR?

It is owned by the State Highway Agency.