US Bridges

River Valley DR S over Mo 364

Good

St. Louis County, Missouri · S 24 T 46 N R 4 E · Structure no. 12108

Built
2001
24 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
319 ft
2 main spans
Daily traffic
5,364
2024 count
Owner
State
State Highway Agency

About this bridge

River Valley DR S over Mo 364 is a steel continuous stringer/multi-beam or girder carrying River Valley DR S over Mo 364 in St. Louis 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 5,364 vehicles a day, roughly 5% of them trucks, projected to reach 8,046 by 2044. The structure is 319 ft (97.2 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRiver Valley DR S
CrossesMo 364
LocationS 24 T 46 N R 4 E
RouteCity Street 0
Coordinates38.71905, -90.51044
Functional classUrban Collector

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.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating65.5 US tons
Inventory rating39.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length319 ft (97.2 m)
Longest span131 ft (39.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,364 (2024)
Projected traffic8,046 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was River Valley DR S over Mo 364 built?

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

What condition is River Valley DR S over Mo 364 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 September 2024.

How much traffic does River Valley DR S over Mo 364 carry?

About 5,364 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is River Valley DR S over Mo 364?

The structure is 319 ft (97.2 m) long with a longest span of 131 ft (39.9 m) and a deck 43 ft wide.

Who owns River Valley DR S over Mo 364?

It is owned by the State Highway Agency.