US Bridges

Il 83 (cal-Sag RD over US 45 Mannheim RD

Fair

Cook County, Illinois · 0.2 M S of 111th ST · Structure no. 016255300000000

Built
1989
36 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
187 ft
2 main spans
Daily traffic
12,000
2023 count
Owner
State
State Highway Agency

About this bridge

Il 83 (cal-Sag RD over US 45 Mannheim RD is a prestressed concrete continuous stringer/multi-beam or girder carrying Il 83 (cal-Sag RD over US 45 Mannheim RD in Cook County, Illinois. It was built in 1989, so it is 36 years old, younger 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 6 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 12,000 vehicles a day, roughly 6% of them trucks, projected to reach 12,500 by 2046. The structure is 187 ft (57 m) long and 63 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIl 83 (cal-Sag RD
CrossesUS 45 Mannheim RD
Location0.2 M S of 111th ST
RouteState Highway 83
CountyCook County
StateIllinois
Coordinates41.68316, -87.85564
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be 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 rating27.9 US tons
Inventory rating21.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length187 ft (57 m)
Longest span95 ft (29 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2023)
Projected traffic12,500 by 2046
Trucks6%
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 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 Il 83 (cal-Sag RD over US 45 Mannheim RD built?

It was built in 1989, making it 36 years old in 2025.

What condition is Il 83 (cal-Sag RD over US 45 Mannheim RD 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 October 2024.

How much traffic does Il 83 (cal-Sag RD over US 45 Mannheim RD carry?

About 12,000 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Il 83 (cal-Sag RD over US 45 Mannheim RD?

The structure is 187 ft (57 m) long with a longest span of 95 ft (29 m) and a deck 63 ft wide.

Who owns Il 83 (cal-Sag RD over US 45 Mannheim RD?

It is owned by the State Highway Agency.