US Bridges

US 20 (lake St) over Il 59 (sutton Rd)

Good

Cook County, Illinois · 0.8 M S of Il 19 · Structure no. 016025400000000

Built
1990
35 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
183 ft
3 main spans
Daily traffic
36,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 20 (lake St) over Il 59 (sutton Rd) is a prestressed concrete continuous stringer/multi-beam or girder carrying US 20 (lake St) over Il 59 (sutton Rd) in Cook County, Illinois. It was built in 1990, so it is 35 years old, younger 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 36,000 vehicles a day, roughly 13% of them trucks, projected to reach 36,259 by 2046. The structure is 183 ft (55.7 m) long and 103 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 20 (lake St)
CrossesIl 59 (sutton Rd)
Location0.8 M S of Il 19
RouteU.S. Route 20
Coordinates42.00818, -88.20331
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.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating91.8 US tons
Inventory rating55 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length183 ft (55.7 m)
Longest span91 ft (27.6 m)
Deck width103 ft (31.3 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,000 (2023)
Projected traffic36,259 by 2046
Trucks13%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 20 (lake St) over Il 59 (sutton Rd) built?

It was built in 1990, making it 35 years old in 2025.

What condition is US 20 (lake St) over Il 59 (sutton Rd) 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 July 2023.

How much traffic does US 20 (lake St) over Il 59 (sutton Rd) carry?

About 36,000 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is US 20 (lake St) over Il 59 (sutton Rd)?

The structure is 183 ft (55.7 m) long with a longest span of 91 ft (27.6 m) and a deck 103 ft wide.

Who owns US 20 (lake St) over Il 59 (sutton Rd)?

It is owned by the State Highway Agency.