US Bridges

FAI 270 EB over FAI 55

Fair

Madison County, Illinois · JCT I-55/70/270 "3I" · Structure no. 060005700000000

Built
1964
61 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
232 ft
4 main spans
Daily traffic
15,100
2023 count
Owner
State
State Highway Agency

About this bridge

FAI 270 EB over FAI 55 is a steel continuous stringer/multi-beam or girder carrying FAI 270 EB over FAI 55 in Madison County, Illinois. It was built in 1964, so it is 61 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 15,100 vehicles a day, roughly 25% of them trucks, projected to reach 15,408 by 2046. The structure is 232 ft (70.7 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesFAI 270 EB
CrossesFAI 55
LocationJCT I-55/70/270 "3I"
RouteInterstate 270
CountyMadison County
StateIllinois
Coordinates38.75204, -89.90706
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating36.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length232 ft (70.7 m)
Longest span71 ft (21.6 m)
Deck width52 ft (15.8 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,100 (2023)
Projected traffic15,408 by 2046
Trucks25%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 270 EB over FAI 55 built?

It was built in 1964, making it 61 years old in 2025.

What condition is FAI 270 EB over FAI 55 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 2024.

How much traffic does FAI 270 EB over FAI 55 carry?

About 15,100 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is FAI 270 EB over FAI 55?

The structure is 232 ft (70.7 m) long with a longest span of 71 ft (21.6 m) and a deck 52 ft wide.

Who owns FAI 270 EB over FAI 55?

It is owned by the State Highway Agency.