US Bridges

I-90 Ramp to SR 91 over I-90 Gr Calumet Riv RR

Fair

Lake County, Indiana · 00.64 E SR 912 · Structure no. 046295

Built
1984
41 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,003 ft
18 main spans
Daily traffic
1,060
2015 count
Owner
Toll Authority
State Toll Authority

About this bridge

I-90 Ramp to SR 91 over I-90 Gr Calumet Riv RR is a steel continuous stringer/multi-beam or girder carrying I-90 Ramp to SR 91 over I-90 Gr Calumet Riv RR in Lake County, Indiana. It was built in 1984, so it is 41 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 1,060 vehicles a day, roughly 38% of them trucks, projected to reach 1,885 by 2031. The structure is 2,003 ft (610.4 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesI-90 Ramp to SR 91
CrossesI-90 Gr Calumet Riv RR
Location00.64 E SR 912
RouteInterstate 90
CountyLake County
StateIndiana
Coordinates41.6097, -87.42306
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans18
Design loadHS 20
Structure length2,003 ft (610.4 m)
Longest span123 ft (37.4 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,060 (2015)
Projected traffic1,885 by 2031
Trucks38%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway, waterway and railroad
Detour if closed8.7 mi (14 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 I-90 Ramp to SR 91 over I-90 Gr Calumet Riv RR built?

It was built in 1984, making it 41 years old in 2025.

What condition is I-90 Ramp to SR 91 over I-90 Gr Calumet Riv RR 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 November 2023.

How much traffic does I-90 Ramp to SR 91 over I-90 Gr Calumet Riv RR carry?

About 1,060 vehicles per day (2015 count), of which roughly 38% are trucks.

How long is I-90 Ramp to SR 91 over I-90 Gr Calumet Riv RR?

The structure is 2,003 ft (610.4 m) long with a longest span of 123 ft (37.4 m) and a deck 31 ft wide.

Who owns I-90 Ramp to SR 91 over I-90 Gr Calumet Riv RR?

It is owned by the State Toll Authority.