US Bridges

Ramp 255NB to 270W over I-270

Fair

Madison County, Illinois · 1.8MI W Ill 157 · Structure no. 060022400000000

Built
1987
38 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
337 ft
5 main spans
Daily traffic
4,800
2022 count
Owner
State
State Highway Agency

About this bridge

Ramp 255NB to 270W over I-270 is a steel continuous stringer/multi-beam or girder carrying Ramp 255NB to 270W over I-270 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 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 4,800 vehicles a day, roughly 14% of them trucks, projected to reach 5,671 by 2046. The structure is 337 ft (102.7 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesRamp 255NB to 270W
CrossesI-270
Location1.8MI W Ill 157
CountyMadison County
StateIllinois
Coordinates38.75648, -90.04054
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating56.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length337 ft (102.7 m)
Longest span87 ft (26.5 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,800 (2022)
Projected traffic5,671 by 2046
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 Ramp 255NB to 270W over I-270 built?

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

What condition is Ramp 255NB to 270W over I-270 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 Ramp 255NB to 270W over I-270 carry?

About 4,800 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Ramp 255NB to 270W over I-270?

The structure is 337 ft (102.7 m) long with a longest span of 87 ft (26.5 m) and a deck 43 ft wide.

Who owns Ramp 255NB to 270W over I-270?

It is owned by the State Highway Agency.