US Bridges

Is 64 W over Cst Clayton Ave Is 64

Fair

St. Louis city, Missouri · S 16 T 45 N R 7 E · Structure no. 3004

Built
1982
43 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
5,403 ft
56 main spans
Daily traffic
45,038
2024 count
Owner
State
State Highway Agency

About this bridge

Is 64 W over Cst Clayton Ave Is 64 is a steel continuous stringer/multi-beam or girder carrying Is 64 W over Cst Clayton Ave Is 64 in St. Louis city, Missouri. It was built in 1982, so it is 43 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 45,038 vehicles a day, roughly 18% of them trucks, projected to reach 56,298 by 2044. The structure is 5,403 ft (1,646.8 m) long and 55 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 64 W
CrossesCst Clayton Ave Is 64
LocationS 16 T 45 N R 7 E
RouteInterstate 64
CountySt. Louis city
StateMissouri
Coordinates38.63212, -90.23793
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating38.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans56
Design loadHS 20 + Mod
Structure length5,403 ft (1,646.8 m)
Longest span121 ft (36.9 m)
Deck width55 ft (16.7 m)
Roadway width52 ft (15.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,038 (2024)
Projected traffic56,298 by 2044
Trucks18%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$43.5 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 64 W over Cst Clayton Ave Is 64 built?

It was built in 1982, making it 43 years old in 2025.

What condition is Is 64 W over Cst Clayton Ave Is 64 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 October 2024.

How much traffic does Is 64 W over Cst Clayton Ave Is 64 carry?

About 45,038 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 64 W over Cst Clayton Ave Is 64?

The structure is 5,403 ft (1,646.8 m) long with a longest span of 121 ft (36.9 m) and a deck 55 ft wide.

Who owns Is 64 W over Cst Clayton Ave Is 64?

It is owned by the State Highway Agency.