US Bridges

SR 912 Ramp NW over Little Calumet River

Fair

Lake County, Indiana · 00.22 E I-80 · Structure no. 033164

Built
1999
26 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
272 ft
3 main spans
Daily traffic
6,652
2022 count
Owner
State
State Highway Agency

About this bridge

SR 912 Ramp NW over Little Calumet River is a prestressed concrete continuous tee beam carrying SR 912 Ramp NW over Little Calumet River in Lake County, Indiana. It was built in 1999, so it is 26 years old, younger than the Indiana average of 46.6 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 6,652 vehicles a day, roughly 10% of them trucks, projected to reach 144 by 2030. The structure is 272 ft (82.9 m) long and 35 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR 912 Ramp NW
CrossesLittle Calumet River
Location00.22 E I-80
RouteState Highway 912
CountyLake County
StateIndiana
Coordinates41.56669, -87.43189
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length272 ft (82.9 m)
Longest span95 ft (29 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,652 (2022)
Projected traffic144 by 2030
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 912 Ramp NW over Little Calumet River built?

It was built in 1999, making it 26 years old in 2025.

What condition is SR 912 Ramp NW over Little Calumet River 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 September 2024.

How much traffic does SR 912 Ramp NW over Little Calumet River carry?

About 6,652 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is SR 912 Ramp NW over Little Calumet River?

The structure is 272 ft (82.9 m) long with a longest span of 95 ft (29 m) and a deck 35 ft wide.

Who owns SR 912 Ramp NW over Little Calumet River?

It is owned by the State Highway Agency.