US Bridges

Il 21 (milwaukee) over Bull Creek

Good

Lake County, Illinois · 0.5 M N Il 137 · Structure no. 049019900000000

Built
2012
13 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
22,400
2023 count
Owner
State
State Highway Agency

About this bridge

Il 21 (milwaukee) over Bull Creek is a steel stringer/multi-beam or girder carrying Il 21 (milwaukee) over Bull Creek in Lake County, Illinois. It was built in 2012, so it is 13 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 22,400 vehicles a day, roughly 2% of them trucks, projected to reach 22,400 by 2046. The structure is 75 ft (22.9 m) long and 81 ft wide.

Location

Open in Google Maps
CarriesIl 21 (milwaukee)
CrossesBull Creek
Location0.5 M N Il 137
RouteState Highway 21
CountyLake County
StateIllinois
Coordinates42.31191, -87.96377
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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95.3 US tons
Inventory rating73.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length75 ft (22.9 m)
Longest span68 ft (20.6 m)
Deck width81 ft (24.7 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,400 (2023)
Projected traffic22,400 by 2046
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 21 (milwaukee) over Bull Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is Il 21 (milwaukee) over Bull Creek 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 June 2023.

How much traffic does Il 21 (milwaukee) over Bull Creek carry?

About 22,400 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Il 21 (milwaukee) over Bull Creek?

The structure is 75 ft (22.9 m) long with a longest span of 68 ft (20.6 m) and a deck 81 ft wide.

Who owns Il 21 (milwaukee) over Bull Creek?

It is owned by the State Highway Agency.