US Bridges

US 41 over Grand Calumet River

Good

Lake County, Indiana · 00.58 S Old SR 312 · Structure no. 015700

Built
2002
23 years old, rebuilt 2020
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
262 ft
5 main spans
Daily traffic
18,401
2021 count
Owner
State
State Highway Agency

About this bridge

US 41 over Grand Calumet River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 41 over Grand Calumet River in Lake County, Indiana. It was built in 2002 and reconstructed in 2020, so it is 23 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18,401 vehicles a day, roughly 18% of them trucks, projected to reach 19,306 by 2030. The structure is 262 ft (79.8 m) long and 82 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 41
CrossesGrand Calumet River
Location00.58 S Old SR 312
RouteU.S. Route 41
StateIndiana
Coordinates41.62045, -87.50888
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
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating47.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length262 ft (79.8 m)
Longest span52 ft (15.8 m)
Deck width82 ft (24.9 m)
Roadway width66 ft (20 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,401 (2021)
Projected traffic19,306 by 2030
Trucks18%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 41 over Grand Calumet River built?

It was built in 2002, making it 23 years old in 2025. It was reconstructed in 2020.

What condition is US 41 over Grand Calumet River 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 2024.

How much traffic does US 41 over Grand Calumet River carry?

About 18,401 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is US 41 over Grand Calumet River?

The structure is 262 ft (79.8 m) long with a longest span of 52 ft (15.8 m) and a deck 82 ft wide.

Who owns US 41 over Grand Calumet River?

It is owned by the State Highway Agency.