US Bridges

Is 44 W over Cst Southwest Ave

Fair

St. Louis city, Missouri · S 25 T 45 N R 6 E · Structure no. 2003

Built
1971
54 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
183 ft
3 main spans
Daily traffic
44,048
2024 count
Owner
State
State Highway Agency

About this bridge

Is 44 W over Cst Southwest Ave is a concrete continuous slab carrying Is 44 W over Cst Southwest Ave in St. Louis city, Missouri. It was built in 1971, so it is 54 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 44,048 vehicles a day, roughly 12% of them trucks, projected to reach 55,060 by 2044. The structure is 183 ft (55.8 m) long and 68 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 44 W
CrossesCst Southwest Ave
LocationS 25 T 45 N R 6 E
RouteInterstate 44
CountySt. Louis city
StateMissouri
Coordinates38.6134, -90.30142
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.4 US tons
Inventory rating45.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length183 ft (55.8 m)
Longest span67 ft (20.4 m)
Deck width68 ft (20.8 m)
Roadway width66 ft (20 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,048 (2024)
Projected traffic55,060 by 2044
Trucks12%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 44 W over Cst Southwest Ave built?

It was built in 1971, making it 54 years old in 2025.

What condition is Is 44 W over Cst Southwest Ave 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 August 2023.

How much traffic does Is 44 W over Cst Southwest Ave carry?

About 44,048 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Is 44 W over Cst Southwest Ave?

The structure is 183 ft (55.8 m) long with a longest span of 67 ft (20.4 m) and a deck 68 ft wide.

Who owns Is 44 W over Cst Southwest Ave?

It is owned by the State Highway Agency.