US Bridges

Il 47 over West Aux Sable Creek

Good

Kendall County, Illinois · 0.66 M S of US 52 · Structure no. 047203300000000

Built
2018
7 years old
Condition
Good
inspected August 2021
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
5,550
2023 count
Owner
State
State Highway Agency

About this bridge

Il 47 over West Aux Sable Creek is a concrete culvert carrying Il 47 over West Aux Sable Creek in Kendall County, Illinois. It was built in 2018, so it is 7 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,550 vehicles a day, roughly 26% of them trucks, projected to reach 6,384 by 2046. The structure is 26 ft (8 m) long and 144 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIl 47
CrossesWest Aux Sable Creek
Location0.66 M S of US 52
RouteState Highway 47
CountyKendall County
StateIllinois
Coordinates41.50027, -88.43402
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating50 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length26 ft (8 m)
Longest span12 ft (3.7 m)
Deck width144 ft (44 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,550 (2023)
Projected traffic6,384 by 2046
Trucks26%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 47 over West Aux Sable Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is Il 47 over West Aux Sable Creek 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 August 2021.

How much traffic does Il 47 over West Aux Sable Creek carry?

About 5,550 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is Il 47 over West Aux Sable Creek?

The structure is 26 ft (8 m) long with a longest span of 12 ft (3.7 m) and a deck 144 ft wide.

Who owns Il 47 over West Aux Sable Creek?

It is owned by the State Highway Agency.