US Bridges

Is 44 W over Cst Elm Ave

Fair

St. Louis County, Missouri · S 4 T 44 N R 6 E · Structure no. 1424

Built
1969
56 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
172 ft
4 main spans
Daily traffic
57,840
2024 count
Owner
State
State Highway Agency

About this bridge

Is 44 W over Cst Elm Ave is a concrete continuous slab carrying Is 44 W over Cst Elm Ave in St. Louis County, Missouri. It was built in 1969, so it is 56 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 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 57,840 vehicles a day, roughly 12% of them trucks, projected to reach 72,300 by 2044. The structure is 172 ft (52.4 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 Elm Ave
LocationS 4 T 44 N R 6 E
RouteInterstate 44
CountySt. Louis County
StateMissouri
Coordinates38.58043, -90.35958
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionJune 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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating33.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length172 ft (52.4 m)
Longest span55 ft (16.8 m)
Deck width68 ft (20.8 m)
Roadway width66 ft (20 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,840 (2024)
Projected traffic72,300 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 44 W over Cst Elm Ave built?

It was built in 1969, making it 56 years old in 2025.

What condition is Is 44 W over Cst Elm 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 June 2024.

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

About 57,840 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Is 44 W over Cst Elm Ave?

The structure is 172 ft (52.4 m) long with a longest span of 55 ft (16.8 m) and a deck 68 ft wide.

Who owns Is 44 W over Cst Elm Ave?

It is owned by the State Highway Agency.