US Bridges

Sauk Trail over I- 57

Fair

Cook County, Illinois · 1.6 M S US 30 · Structure no. 016057500000000

Built
1966
59 years old, rebuilt 2020
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
243 ft
2 main spans
Daily traffic
11,800
2022 count
Owner
State
State Highway Agency

About this bridge

Sauk Trail over I- 57 is a steel continuous stringer/multi-beam or girder carrying Sauk Trail over I- 57 in Cook County, Illinois. It was built in 1966 and reconstructed in 2020, so it is 59 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 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 11,800 vehicles a day, roughly 8% of them trucks, projected to reach 11,801 by 2046. The structure is 243 ft (74.1 m) long and 82 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSauk Trail
CrossesI- 57
Location1.6 M S US 30
CountyCook County
StateIllinois
Coordinates41.48432, -87.74705
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating34.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span89 ft (27.2 m)
Deck width82 ft (25 m)
Roadway width55 ft (16.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,800 (2022)
Projected traffic11,801 by 2046
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 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 Sauk Trail over I- 57 built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2020.

What condition is Sauk Trail over I- 57 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 December 2024.

How much traffic does Sauk Trail over I- 57 carry?

About 11,800 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sauk Trail over I- 57?

The structure is 243 ft (74.1 m) long with a longest span of 89 ft (27.2 m) and a deck 82 ft wide.

Who owns Sauk Trail over I- 57?

It is owned by the State Highway Agency.