US Bridges

Main ST over FAI 270

Good

Madison County, Illinois · 1 M W JCT 159 · Structure no. 060018400000000

Built
1963
62 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
224 ft
4 main spans
Daily traffic
5,750
2021 count
Owner
State
State Highway Agency

About this bridge

Main ST over FAI 270 is a steel continuous stringer/multi-beam or girder carrying Main ST over FAI 270 in Madison County, Illinois. It was built in 1963, so it is 62 years old, older 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 5,750 vehicles a day, roughly 3% of them trucks, projected to reach 6,153 by 2046. The structure is 224 ft (68.3 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesMain ST
CrossesFAI 270
Location1 M W JCT 159
CountyMadison County
StateIllinois
Coordinates38.75721, -89.97472
Functional classUrban Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
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 rating70.3 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length224 ft (68.3 m)
Longest span68 ft (20.7 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,750 (2021)
Projected traffic6,153 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

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 Main ST over FAI 270 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Main ST over FAI 270 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 2024.

How much traffic does Main ST over FAI 270 carry?

About 5,750 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Main ST over FAI 270?

The structure is 224 ft (68.3 m) long with a longest span of 68 ft (20.7 m) and a deck 33 ft wide.

Who owns Main ST over FAI 270?

It is owned by the State Highway Agency.