US Bridges

Central Ave S over Is 44

Fair

St. Louis County, Missouri · S 2071 T 44 N R 3 E · Structure no. 3506

Built
1989
36 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
240 ft
4 main spans
Daily traffic
16,934
2024 count
Owner
State
State Highway Agency

About this bridge

Central Ave S over Is 44 is a steel continuous stringer/multi-beam or girder carrying Central Ave S over Is 44 in St. Louis County, Missouri. It was built in 1989, so it is 36 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 16,934 vehicles a day, roughly 5% of them trucks, projected to reach 25,401 by 2044. The structure is 240 ft (73.2 m) long and 66 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesCentral Ave S
CrossesIs 44
LocationS 2071 T 44 N R 3 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.50668, -90.62786
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length240 ft (73.2 m)
Longest span79 ft (24.1 m)
Deck width66 ft (20 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,934 (2024)
Projected traffic25,401 by 2044
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed24.2 mi (39 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 Central Ave S over Is 44 built?

It was built in 1989, making it 36 years old in 2025.

What condition is Central Ave S over Is 44 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 July 2024.

How much traffic does Central Ave S over Is 44 carry?

About 16,934 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Central Ave S over Is 44?

The structure is 240 ft (73.2 m) long with a longest span of 79 ft (24.1 m) and a deck 66 ft wide.

Who owns Central Ave S over Is 44?

It is owned by the State Highway Agency.