US Bridges

US 12 45 Mannheim over RR - Metra Cp Rds

Good

Cook County, Illinois · 2.0 M S Il 19 · Structure no. 016281500000000

Built
2010
15 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,250 ft
14 main spans
Daily traffic
46,900
2023 count
Owner
State
State Highway Agency

About this bridge

US 12 45 Mannheim over RR - Metra Cp Rds is a steel continuous stringer/multi-beam or girder carrying US 12 45 Mannheim over RR - Metra Cp Rds in Cook County, Illinois. It was built in 2010, so it is 15 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 46,900 vehicles a day, roughly 11% of them trucks, projected to reach 46,662 by 2046. The structure is 1,250 ft (381.1 m) long and 100 ft wide.

Location

Open in Google Maps
CarriesUS 12 45 Mannheim
CrossesRR - Metra Cp Rds
Location2.0 M S Il 19
RouteU.S. Route 12
CountyCook County
StateIllinois
Coordinates41.94344, -87.88525
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating71.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadHS 20
Structure length1,250 ft (381.1 m)
Longest span136 ft (41.4 m)
Deck width100 ft (30.5 m)
Roadway width81 ft (24.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,900 (2023)
Projected traffic46,662 by 2046
Trucks11%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
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 12 45 Mannheim over RR - Metra Cp Rds built?

It was built in 2010, making it 15 years old in 2025.

What condition is US 12 45 Mannheim over RR - Metra Cp Rds 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 August 2023.

How much traffic does US 12 45 Mannheim over RR - Metra Cp Rds carry?

About 46,900 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 12 45 Mannheim over RR - Metra Cp Rds?

The structure is 1,250 ft (381.1 m) long with a longest span of 136 ft (41.4 m) and a deck 100 ft wide.

Who owns US 12 45 Mannheim over RR - Metra Cp Rds?

It is owned by the State Highway Agency.