US Bridges

Antire RD S over Is 44

FairPosted for load

St. Louis County, Missouri · S 34 T 44 N R 4 E · Structure no. 6492

Built
1958
67 years old, rebuilt 1989
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
268 ft
4 main spans
Daily traffic
1,418
2024 count
Owner
State
State Highway Agency

About this bridge

Antire RD S over Is 44 is a prestressed concrete continuous stringer/multi-beam or girder carrying Antire RD S over Is 44 in St. Louis County, Missouri. It was built in 1958 and reconstructed in 1989, so it is 67 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. Its operating status is: posted for load restriction.

It carries about 1,418 vehicles a day, roughly 5% of them trucks, projected to reach 2,127 by 2044. The structure is 268 ft (81.7 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAntire RD S
CrossesIs 44
LocationS 34 T 44 N R 4 E
RouteCounty Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.5153, -90.54977
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.7 US tons
Inventory rating25.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length268 ft (81.7 m)
Longest span87 ft (26.5 m)
Deck width46 ft (13.9 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,418 (2024)
Projected traffic2,127 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 Antire RD S over Is 44 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1989.

What condition is Antire RD 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 Antire RD S over Is 44 carry?

About 1,418 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Antire RD S over Is 44?

The structure is 268 ft (81.7 m) long with a longest span of 87 ft (26.5 m) and a deck 46 ft wide.

Who owns Antire RD S over Is 44?

It is owned by the State Highway Agency.