US Bridges

Is 44 W over Cst Tower Grove Ave

Fair

St. Louis city, Missouri · S 20 T 45 N R 7 E · Structure no. 1849

Built
1970
55 years old, rebuilt 2018
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
162 ft
4 main spans
Daily traffic
49,558
2024 count
Owner
State
State Highway Agency

About this bridge

Is 44 W over Cst Tower Grove Ave is a concrete continuous slab carrying Is 44 W over Cst Tower Grove Ave in St. Louis city, Missouri. It was built in 1970 and reconstructed in 2018, so it is 55 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 49,558 vehicles a day, roughly 12% of them trucks, projected to reach 61,948 by 2044. The structure is 162 ft (49.4 m) long and 80 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 44 W
CrossesCst Tower Grove Ave
LocationS 20 T 45 N R 7 E
RouteInterstate 44
CountySt. Louis city
StateMissouri
Coordinates38.61831, -90.25605
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.
Substructure7 GoodSome minor problems.
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 alignment8: Equal to present desirable criteria
Operating rating65.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length162 ft (49.4 m)
Longest span50 ft (15.1 m)
Deck width80 ft (24.5 m)
Roadway width78 ft (23.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49,558 (2024)
Projected traffic61,948 by 2044
Trucks12%
Lanes on structure5
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 Tower Grove Ave built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2018.

What condition is Is 44 W over Cst Tower Grove 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 Tower Grove Ave carry?

About 49,558 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Is 44 W over Cst Tower Grove Ave?

The structure is 162 ft (49.4 m) long with a longest span of 50 ft (15.1 m) and a deck 80 ft wide.

Who owns Is 44 W over Cst Tower Grove Ave?

It is owned by the State Highway Agency.