US Bridges

Il 7 over S&s Canal/Des Plns R

Poor

Will County, Illinois · 0.5 M W of Il 171 · Structure no. 099018500000000

Built
1971
54 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
3,173 ft
25 main spans
Daily traffic
24,400
2023 count
Owner
State
State Highway Agency

About this bridge

Il 7 over S&s Canal/Des Plns R is a steel continuous stringer/multi-beam or girder carrying Il 7 over S&s Canal/Des Plns R in Will County, Illinois. It was built in 1971, so it is 54 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 24,400 vehicles a day, roughly 8% of them trucks, projected to reach 29,952 by 2046. The structure is 3,173 ft (967.1 m) long and 46 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesIl 7
CrossesS&s Canal/Des Plns R
Location0.5 M W of Il 171
RouteState Highway 7
Coordinates41.59279, -88.07102
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans25
Design loadHS 20
Structure length3,173 ft (967.1 m)
Longest span265 ft (80.8 m)
Deck width46 ft (14 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,400 (2023)
Projected traffic29,952 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Il 7 over S&s Canal/Des Plns R built?

It was built in 1971, making it 54 years old in 2025.

What condition is Il 7 over S&s Canal/Des Plns R in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Il 7 over S&s Canal/Des Plns R carry?

About 24,400 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Il 7 over S&s Canal/Des Plns R?

The structure is 3,173 ft (967.1 m) long with a longest span of 265 ft (80.8 m) and a deck 46 ft wide.

Who owns Il 7 over S&s Canal/Des Plns R?

It is owned by the State Highway Agency.