US Bridges

Ridge Road over Aux Sable Creek

FairPosted for load

Kendall County, Illinois · CH11 Ovr Aux Sable · Structure no. 047301100000000

Built
1948
77 years old, rebuilt 1986
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
11,500
2024 count
Owner
County
County Highway Agency

About this bridge

Ridge Road over Aux Sable Creek is a prestressed concrete box beam or girders - multiple carrying Ridge Road over Aux Sable Creek in Kendall County, Illinois. It was built in 1948 and reconstructed in 1986, so it is 77 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 11,500 vehicles a day, roughly 12% of them trucks, projected to reach 13,699 by 2046. The structure is 38 ft (11.6 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesRidge Road
CrossesAux Sable Creek
LocationCH11 Ovr Aux Sable
RouteCounty Highway 0
CountyKendall County
StateIllinois
Coordinates41.50572, -88.27309
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 alignment7: Better than present minimum criteria
Operating rating43.2 US tons
Inventory rating26.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length38 ft (11.6 m)
Longest span34 ft (10.4 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,500 (2024)
Projected traffic13,699 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Ridge Road over Aux Sable Creek built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1986.

What condition is Ridge Road over Aux Sable 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 December 2023.

How much traffic does Ridge Road over Aux Sable Creek carry?

About 11,500 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Ridge Road over Aux Sable Creek?

The structure is 38 ft (11.6 m) long with a longest span of 34 ft (10.4 m) and a deck 36 ft wide.

Who owns Ridge Road over Aux Sable Creek?

It is owned by the County Highway Agency.