US Bridges

Ill 143 over FAI-55

Good

Madison County, Illinois · 2M E Edwardsville · Structure no. 060014800000000

Built
1956
69 years old, rebuilt 2001
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
194 ft
4 main spans
Daily traffic
6,800
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 143 over FAI-55 is a steel continuous stringer/multi-beam or girder carrying Ill 143 over FAI-55 in Madison County, Illinois. It was built in 1956 and reconstructed in 2001, so it is 69 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 6,800 vehicles a day, roughly 6% of them trucks, projected to reach 7,490 by 2046. The structure is 194 ft (59.1 m) long and 93 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesIll 143
CrossesFAI-55
Location2M E Edwardsville
RouteState Highway 143
Coordinates38.79562, -89.89513
Functional classUrban Other Principal 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating53.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length194 ft (59.1 m)
Longest span52 ft (15.8 m)
Deck width93 ft (28.2 m)
Roadway width86 ft (26.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,800 (2023)
Projected traffic7,490 by 2046
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ill 143 over FAI-55 built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2001.

What condition is Ill 143 over FAI-55 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 May 2024.

How much traffic does Ill 143 over FAI-55 carry?

About 6,800 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Ill 143 over FAI-55?

The structure is 194 ft (59.1 m) long with a longest span of 52 ft (15.8 m) and a deck 93 ft wide.

Who owns Ill 143 over FAI-55?

It is owned by the State Highway Agency.