US Bridges

Rt Aa E over Cox CR

Good

Washington County, Missouri · S 4 T 37 N R 1 E · Structure no. 7238

Built
1960
65 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
160
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Aa E over Cox CR is a concrete continuous culvert carrying Rt Aa E over Cox CR in Washington County, Missouri. It was built in 1960, so it is 65 years old, older 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 160 vehicles a day, roughly 11% of them trucks, projected to reach 224 by 2044. The structure is 38 ft (11.6 m) long and 27 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesRt Aa E
CrossesCox CR
LocationS 4 T 37 N R 1 E
RouteState Highway 0AA
Coordinates37.9568, -90.92918
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72.4 US tons
Inventory rating43.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2024)
Projected traffic224 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 Aa E over Cox CR built?

It was built in 1960, making it 65 years old in 2025.

What condition is Rt Aa E over Cox CR 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 June 2024.

How much traffic does Rt Aa E over Cox CR carry?

About 160 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt Aa E over Cox CR?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 27 ft wide.

Who owns Rt Aa E over Cox CR?

It is owned by the State Highway Agency.