US Bridges

Is 55 S over Fourche CR

Fair

Ste. Genevieve County, Missouri · S 2088 T 38 N R 7 E · Structure no. 1951

Built
1970
55 years old, rebuilt 1984
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
285 ft
5 main spans
Daily traffic
13,211
2024 count
Owner
State
State Highway Agency

About this bridge

Is 55 S over Fourche CR is a steel continuous stringer/multi-beam or girder carrying Is 55 S over Fourche CR in Ste. Genevieve County, Missouri. It was built in 1970 and reconstructed in 1984, 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.

It carries about 13,211 vehicles a day, roughly 16% of them trucks, projected to reach 25,101 by 2044. The structure is 285 ft (86.9 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 55 S
CrossesFourche CR
LocationS 2088 T 38 N R 7 E
RouteInterstate 55
Coordinates37.99827, -90.2139
Functional classRural 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length285 ft (86.9 m)
Longest span61 ft (18.6 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,211 (2024)
Projected traffic25,101 by 2044
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 55 S over Fourche CR built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1984.

What condition is Is 55 S over Fourche CR 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 October 2024.

How much traffic does Is 55 S over Fourche CR carry?

About 13,211 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is Is 55 S over Fourche CR?

The structure is 285 ft (86.9 m) long with a longest span of 61 ft (18.6 m) and a deck 41 ft wide.

Who owns Is 55 S over Fourche CR?

It is owned by the State Highway Agency.