US Bridges

Il 59 over Clow Creek

Fair

Will County, Illinois · 0.28 M N of 111th ST · Structure no. 099461800000000

Built
2001
24 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete Continuous
Length
25 ft
3 main spans
Daily traffic
34,700
2023 count
Owner
State
State Highway Agency

About this bridge

Il 59 over Clow Creek is a concrete continuous culvert carrying Il 59 over Clow Creek in Will County, Illinois. It was built in 2001, so it is 24 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 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 34,700 vehicles a day, roughly 6% of them trucks, projected to reach 24,840 by 2046. The structure is 25 ft (7.5 m) long.

CarriesIl 59
CrossesClow Creek
Location0.28 M N of 111th ST
RouteState Highway 59
Coordinates41.68415, -88.20489
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106 US tons
Inventory rating63.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length25 ft (7.5 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,700 (2023)
Projected traffic24,840 by 2046
Trucks6%
Lanes on structure2
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 59 over Clow Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is Il 59 over Clow Creek 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 May 2024.

How much traffic does Il 59 over Clow Creek carry?

About 34,700 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Il 59 over Clow Creek?

The structure is 25 ft (7.5 m) long with a longest span of 11 ft (3.3 m).

Who owns Il 59 over Clow Creek?

It is owned by the State Highway Agency.