US Bridges

Il 72 over Coon Creek

Fair

Kane County, Illinois · 5.3 M W of Il 47 · Structure no. 045005300000000

Built
1928
97 years old, rebuilt 1981
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
56 ft
2 main spans
Daily traffic
6,650
2023 count
Owner
State
State Highway Agency

About this bridge

Il 72 over Coon Creek is a concrete continuous slab carrying Il 72 over Coon Creek in Kane County, Illinois. It was built in 1928 and reconstructed in 1981, so it is 97 years old, older 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 6,650 vehicles a day, roughly 9% of them trucks, projected to reach 8,906 by 2046. The structure is 56 ft (17.1 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesIl 72
CrossesCoon Creek
Location5.3 M W of Il 47
RouteState Highway 72
CountyKane County
StateIllinois
Coordinates42.08828, -88.56153
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span28 ft (8.4 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,650 (2023)
Projected traffic8,906 by 2046
Trucks9%
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 72 over Coon Creek built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1981.

What condition is Il 72 over Coon 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 October 2023.

How much traffic does Il 72 over Coon Creek carry?

About 6,650 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Il 72 over Coon Creek?

The structure is 56 ft (17.1 m) long with a longest span of 28 ft (8.4 m) and a deck 35 ft wide.

Who owns Il 72 over Coon Creek?

It is owned by the State Highway Agency.