US Bridges

FAI 255 SB over Collinsville RD

Fair

Madison County, Illinois · .1M SE Farmnt Racetk · Structure no. 060023900000000

Built
1986
39 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
126 ft
1 main span
Daily traffic
21,850
2023 count
Owner
State
State Highway Agency

About this bridge

FAI 255 SB over Collinsville RD is a steel stringer/multi-beam or girder carrying FAI 255 SB over Collinsville RD in Madison County, Illinois. It was built in 1986, so it is 39 years old, younger 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 21,850 vehicles a day, roughly 16% of them trucks, projected to reach 25,038 by 2046. The structure is 126 ft (38.4 m) long and 73 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesFAI 255 SB
CrossesCollinsville RD
Location.1M SE Farmnt Racetk
RouteInterstate 255
CountyMadison County
StateIllinois
Coordinates38.65984, -90.03082
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
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 rating77.8 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length126 ft (38.4 m)
Longest span121 ft (36.9 m)
Deck width73 ft (22.1 m)
Roadway width70 ft (21.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,850 (2023)
Projected traffic25,038 by 2046
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.2 mi (10 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 SB over Collinsville RD built?

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

What condition is FAI 255 SB over Collinsville RD 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 January 2025.

How much traffic does FAI 255 SB over Collinsville RD carry?

About 21,850 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is FAI 255 SB over Collinsville RD?

The structure is 126 ft (38.4 m) long with a longest span of 121 ft (36.9 m) and a deck 73 ft wide.

Who owns FAI 255 SB over Collinsville RD?

It is owned by the State Highway Agency.