US Bridges

Douglas RD over Waubansee CR

Good

Kendall County, Illinois · .69 M N US 34 · Structure no. 047630600000000

Built
2008
17 years old
Condition
Good
inspected March 2023
Type
Frame
Concrete
Length
43 ft
1 main span
Daily traffic
16,700
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Douglas RD over Waubansee CR is a concrete frame carrying Douglas RD over Waubansee CR in Kendall County, Illinois. It was built in 2008, so it is 17 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 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 16,700 vehicles a day, roughly 5% of them trucks, projected to reach 21,945 by 2046. The structure is 43 ft (13.1 m) long and 91 ft wide.

CarriesDouglas RD
CrossesWaubansee CR
Location.69 M N US 34
Coordinates41.70897, -88.31769
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span36 ft (11 m)
Deck width91 ft (27.7 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,700 (2024)
Projected traffic21,945 by 2046
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Douglas RD over Waubansee CR built?

It was built in 2008, making it 17 years old in 2025.

What condition is Douglas RD over Waubansee CR 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 March 2023.

How much traffic does Douglas RD over Waubansee CR carry?

About 16,700 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Douglas RD over Waubansee CR?

The structure is 43 ft (13.1 m) long with a longest span of 36 ft (11 m) and a deck 91 ft wide.

Who owns Douglas RD over Waubansee CR?

It is owned by the City or Municipal Highway Agency.