US Bridges

Il 56 over Fox River Tailrace

Good

Kane County, Illinois · 0.1 M W of Il 25 · Structure no. 045005500000000

Built
1932
93 years old, rebuilt 1998
Condition
Good
inspected January 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
46 ft
1 main span
Daily traffic
11,900
2023 count
Owner
State
State Highway Agency

About this bridge

Il 56 over Fox River Tailrace is a steel stringer/multi-beam or girder carrying Il 56 over Fox River Tailrace in Kane County, Illinois. It was built in 1932 and reconstructed in 1998, so it is 93 years old, older 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 11,900 vehicles a day, roughly 6% of them trucks, projected to reach 14,884 by 2046. The structure is 46 ft (14.1 m) long and 49 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesIl 56
CrossesFox River Tailrace
Location0.1 M W of Il 25
RouteState Highway 56
Coordinates41.80673, -88.32265
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.3 US tons
Inventory rating42.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length46 ft (14.1 m)
Longest span44 ft (13.4 m)
Deck width49 ft (15 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,900 (2023)
Projected traffic14,884 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
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 56 over Fox River Tailrace built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1998.

What condition is Il 56 over Fox River Tailrace 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 January 2022.

How much traffic does Il 56 over Fox River Tailrace carry?

About 11,900 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Il 56 over Fox River Tailrace?

The structure is 46 ft (14.1 m) long with a longest span of 44 ft (13.4 m) and a deck 49 ft wide.

Who owns Il 56 over Fox River Tailrace?

It is owned by the State Highway Agency.