US Bridges

Galena Rd/Fau 2502 over Rob Roy Creek

Good

Kendall County, Illinois · At Route 47 · Structure no. 047301800000000

Built
1964
61 years old, rebuilt 2001
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
5,000
2024 count
Owner
County
County Highway Agency

About this bridge

Galena Rd/Fau 2502 over Rob Roy Creek is a prestressed concrete box beam or girders - multiple carrying Galena Rd/Fau 2502 over Rob Roy Creek in Kendall County, Illinois. It was built in 1964 and reconstructed in 2001, so it is 61 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 5,000 vehicles a day, roughly 21% of them trucks, projected to reach 8,512 by 2046. The structure is 39 ft (11.9 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesGalena Rd/Fau 2502
CrossesRob Roy Creek
LocationAt Route 47
Coordinates41.70542, -88.44674
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.1 US tons
Inventory rating34.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span37 ft (11.2 m)
Deck width37 ft (11.4 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2024)
Projected traffic8,512 by 2046
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Galena Rd/Fau 2502 over Rob Roy Creek built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2001.

What condition is Galena Rd/Fau 2502 over Rob Roy 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 December 2023.

How much traffic does Galena Rd/Fau 2502 over Rob Roy Creek carry?

About 5,000 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is Galena Rd/Fau 2502 over Rob Roy Creek?

The structure is 39 ft (11.9 m) long with a longest span of 37 ft (11.2 m) and a deck 37 ft wide.

Who owns Galena Rd/Fau 2502 over Rob Roy Creek?

It is owned by the County Highway Agency.