US Bridges

FAI 255 NB over Rp 1/RDWY B

Good

Madison County, Illinois · N of FAI 55 70;US 40 · Structure no. 060021400000000

Built
1987
38 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
382 ft
2 main spans
Daily traffic
20,100
2023 count
Owner
State
State Highway Agency

About this bridge

FAI 255 NB over Rp 1/RDWY B is a steel continuous stringer/multi-beam or girder carrying FAI 255 NB over Rp 1/RDWY B in Madison County, Illinois. It was built in 1987, so it is 38 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20,100 vehicles a day, roughly 11% of them trucks, projected to reach 23,326 by 2046. The structure is 382 ft (116.4 m) long and 59 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFAI 255 NB
CrossesRp 1/RDWY B
LocationN of FAI 55 70;US 40
RouteInterstate 255
Coordinates38.67584, -90.02961
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating39.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length382 ft (116.4 m)
Longest span157 ft (47.9 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,100 (2023)
Projected traffic23,326 by 2046
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAI 255 NB over Rp 1/RDWY B built?

It was built in 1987, making it 38 years old in 2025.

What condition is FAI 255 NB over Rp 1/RDWY B in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does FAI 255 NB over Rp 1/RDWY B carry?

About 20,100 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is FAI 255 NB over Rp 1/RDWY B?

The structure is 382 ft (116.4 m) long with a longest span of 157 ft (47.9 m) and a deck 59 ft wide.

Who owns FAI 255 NB over Rp 1/RDWY B?

It is owned by the State Highway Agency.