US Bridges

Central Ave & Ramp over I- 55 Stevenson

Good

Cook County, Illinois · 1.1 M SW Il 50 · Structure no. 016072400000000

Built
1964
61 years old, rebuilt 2012
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
326 ft
4 main spans
Daily traffic
9,000
2022 count
Owner
State
State Highway Agency

About this bridge

Central Ave & Ramp over I- 55 Stevenson is a steel continuous stringer/multi-beam or girder carrying Central Ave & Ramp over I- 55 Stevenson in Cook County, Illinois. It was built in 1964 and reconstructed in 2012, 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 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 9,000 vehicles a day, roughly 6% of them trucks, projected to reach 10,100 by 2046. The structure is 326 ft (99.4 m) long and 152 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCentral Ave & Ramp
CrossesI- 55 Stevenson
Location1.1 M SW Il 50
Coordinates41.81091, -87.76281
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+8 approach)
Design loadHS 20 + Mod
Structure length326 ft (99.4 m)
Longest span89 ft (27.2 m)
Deck width152 ft (46.3 m)
Roadway width92 ft (28 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,000 (2022)
Projected traffic10,100 by 2046
Trucks6%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$20.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Central Ave & Ramp over I- 55 Stevenson built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2012.

What condition is Central Ave & Ramp over I- 55 Stevenson 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 October 2023.

How much traffic does Central Ave & Ramp over I- 55 Stevenson carry?

About 9,000 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Central Ave & Ramp over I- 55 Stevenson?

The structure is 326 ft (99.4 m) long with a longest span of 89 ft (27.2 m) and a deck 152 ft wide.

Who owns Central Ave & Ramp over I- 55 Stevenson?

It is owned by the State Highway Agency.