US Bridges

Il 137 over US 45

Fair

Lake County, Illinois · 1.4 M S of Il 120 · Structure no. 049017000000000

Built
1993
32 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
179 ft
2 main spans
Daily traffic
14,100
2023 count
Owner
State
State Highway Agency

About this bridge

Il 137 over US 45 is a steel continuous stringer/multi-beam or girder carrying Il 137 over US 45 in Lake County, Illinois. It was built in 1993, so it is 32 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 5 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 14,100 vehicles a day, roughly 8% of them trucks, projected to reach 14,100 by 2046. The structure is 179 ft (54.7 m) long and 63 ft wide.

Location

Open in Google Maps
CarriesIl 137
CrossesUS 45
Location1.4 M S of Il 120
RouteState Highway 137
CountyLake County
StateIllinois
Coordinates42.31455, -88.00439
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating95.3 US tons
Inventory rating57.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length179 ft (54.7 m)
Longest span90 ft (27.4 m)
Deck width63 ft (19.3 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,100 (2023)
Projected traffic14,100 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 137 over US 45 built?

It was built in 1993, making it 32 years old in 2025.

What condition is Il 137 over US 45 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 February 2025.

How much traffic does Il 137 over US 45 carry?

About 14,100 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Il 137 over US 45?

The structure is 179 ft (54.7 m) long with a longest span of 90 ft (27.4 m) and a deck 63 ft wide.

Who owns Il 137 over US 45?

It is owned by the State Highway Agency.