US Bridges

Il 255 SB Cd over Ramp 255NB to 270WB

Fair

Madison County, Illinois · .20 MI N of FAI 270 · Structure no. 060023300000000

Built
1994
31 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
98 ft
1 main span
Daily traffic
3,750
2022 count
Owner
State
State Highway Agency

About this bridge

Il 255 SB Cd over Ramp 255NB to 270WB is a steel stringer/multi-beam or girder carrying Il 255 SB Cd over Ramp 255NB to 270WB in Madison County, Illinois. It was built in 1994, so it is 31 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 3,750 vehicles a day, roughly 15% of them trucks, projected to reach 3,745 by 2046. The structure is 98 ft (29.9 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIl 255 SB Cd
CrossesRamp 255NB to 270WB
Location.20 MI N of FAI 270
CountyMadison County
StateIllinois
Coordinates38.76021, -90.04415
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length98 ft (29.9 m)
Longest span95 ft (29.1 m)
Deck width29 ft (8.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,750 (2022)
Projected traffic3,745 by 2046
Trucks15%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Il 255 SB Cd over Ramp 255NB to 270WB built?

It was built in 1994, making it 31 years old in 2025.

What condition is Il 255 SB Cd over Ramp 255NB to 270WB 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 November 2024.

How much traffic does Il 255 SB Cd over Ramp 255NB to 270WB carry?

About 3,750 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Il 255 SB Cd over Ramp 255NB to 270WB?

The structure is 98 ft (29.9 m) long with a longest span of 95 ft (29.1 m) and a deck 29 ft wide.

Who owns Il 255 SB Cd over Ramp 255NB to 270WB?

It is owned by the State Highway Agency.