US Bridges

Is 44 E over Mo 109

Fair

St. Louis County, Missouri · S 2071 T 44 N R 4 E · Structure no. 3503

Built
1986
39 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
169 ft
2 main spans
Daily traffic
69,109
2024 count
Owner
State
State Highway Agency

About this bridge

Is 44 E over Mo 109 is a prestressed concrete continuous stringer/multi-beam or girder carrying Is 44 E over Mo 109 in St. Louis County, Missouri. It was built in 1986, so it is 39 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 69,109 vehicles a day, roughly 12% of them trucks, projected to reach 86,386 by 2044. The structure is 169 ft (51.5 m) long and 115 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 44 E
CrossesMo 109
LocationS 2071 T 44 N R 4 E
RouteInterstate 44
Coordinates38.50636, -90.62332
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating39.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length169 ft (51.5 m)
Longest span85 ft (25.8 m)
Deck width115 ft (35.2 m)
Roadway width113 ft (34.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,109 (2024)
Projected traffic86,386 by 2044
Trucks12%
Lanes on structure6
Traffic directionTwo-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 E over Mo 109 built?

It was built in 1986, making it 39 years old in 2025.

What condition is Is 44 E over Mo 109 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 Is 44 E over Mo 109 carry?

About 69,109 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Is 44 E over Mo 109?

The structure is 169 ft (51.5 m) long with a longest span of 85 ft (25.8 m) and a deck 115 ft wide.

Who owns Is 44 E over Mo 109?

It is owned by the State Highway Agency.