US Bridges

FAI 255 over Mousette Ln-Fau 9200

Fair

St. Clair County, Illinois · 0.4 MI No Doris Ave. · Structure no. 082022600000000

Built
1979
46 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
111 ft
1 main span
Daily traffic
41,500
2023 count
Owner
State
State Highway Agency

About this bridge

FAI 255 over Mousette Ln-Fau 9200 is a steel stringer/multi-beam or girder carrying FAI 255 over Mousette Ln-Fau 9200 in St. Clair County, Illinois. It was built in 1979, so it is 46 years old, older than the Illinois average of 45.3 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.

It carries about 41,500 vehicles a day, roughly 16% of them trucks, projected to reach 45,450 by 2046. The structure is 111 ft (33.9 m) long and 121 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesFAI 255
CrossesMousette Ln-Fau 9200
Location0.4 MI No Doris Ave.
RouteInterstate 255
CountySt. Clair County
StateIllinois
Coordinates38.56566, -90.13016
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.8 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length111 ft (33.9 m)
Longest span109 ft (33.2 m)
Deck width121 ft (36.9 m)
Roadway width118 ft (35.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,500 (2023)
Projected traffic45,450 by 2046
Trucks16%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed9.9 mi (16 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 FAI 255 over Mousette Ln-Fau 9200 built?

It was built in 1979, making it 46 years old in 2025.

What condition is FAI 255 over Mousette Ln-Fau 9200 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 December 2023.

How much traffic does FAI 255 over Mousette Ln-Fau 9200 carry?

About 41,500 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is FAI 255 over Mousette Ln-Fau 9200?

The structure is 111 ft (33.9 m) long with a longest span of 109 ft (33.2 m) and a deck 121 ft wide.

Who owns FAI 255 over Mousette Ln-Fau 9200?

It is owned by the State Highway Agency.