US Bridges

Mississippi Ave S over Is 44 Is 44

FairPosted for load

St. Louis city, Missouri · S 27 T 45 N R 7 E · Structure no. 895

Built
1970
55 years old, rebuilt 2007
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
306 ft
4 main spans
Daily traffic
5,652
2024 count
Owner
State
State Highway Agency

About this bridge

Mississippi Ave S over Is 44 Is 44 is a steel continuous stringer/multi-beam or girder carrying Mississippi Ave S over Is 44 Is 44 in St. Louis city, Missouri. It was built in 1970 and reconstructed in 2007, 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 5 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 5,652 vehicles a day, roughly 5% of them trucks, projected to reach 8,478 by 2044. The structure is 306 ft (93.3 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMississippi Ave S
CrossesIs 44 Is 44
LocationS 27 T 45 N R 7 E
RouteCity Street 0
CountySt. Louis city
StateMissouri
Coordinates38.61224, -90.2145
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 rating40.7 US tons
Inventory rating24.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length306 ft (93.3 m)
Longest span116 ft (35.4 m)
Deck width44 ft (13.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,652 (2024)
Projected traffic8,478 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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 Mississippi Ave S over Is 44 Is 44 built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2007.

What condition is Mississippi Ave S over Is 44 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 August 2023.

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

About 5,652 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mississippi Ave S over Is 44 Is 44?

The structure is 306 ft (93.3 m) long with a longest span of 116 ft (35.4 m) and a deck 44 ft wide.

Who owns Mississippi Ave S over Is 44 Is 44?

It is owned by the State Highway Agency.