US Bridges

US 45/IL21 over Ditch

Good

Cook County, Illinois · 300 S of Lake Cook · Structure no. 016221000000000

Built
1993
32 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete Continuous
Length
23 ft
3 main spans
Daily traffic
30,200
2023 count
Owner
State
State Highway Agency

About this bridge

US 45/IL21 over Ditch is a concrete continuous culvert carrying US 45/IL21 over Ditch in Cook 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 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 30,200 vehicles a day, roughly 4% of them trucks, projected to reach 27,573 by 2046. The structure is 23 ft (7.1 m) long.

Location

Open in Google Maps
CarriesUS 45/IL21
CrossesDitch
Location300 S of Lake Cook
RouteU.S. Route 45
CountyCook County
StateIllinois
Coordinates42.15229, -87.9146
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.1 US tons
Inventory rating42.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length23 ft (7.1 m)
Longest span8 ft (2.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,200 (2023)
Projected traffic27,573 by 2046
Trucks4%
Lanes on structure6
Traffic directionOne-lane bridge for two-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 US 45/IL21 over Ditch built?

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

What condition is US 45/IL21 over Ditch 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 October 2022.

How much traffic does US 45/IL21 over Ditch carry?

About 30,200 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US 45/IL21 over Ditch?

The structure is 23 ft (7.1 m) long with a longest span of 8 ft (2.3 m).

Who owns US 45/IL21 over Ditch?

It is owned by the State Highway Agency.