US Bridges

Il 47 over Blackberry Creek

Good

Kane County, Illinois · 1.0 M S of I-88 · Structure no. 045002400000000

Built
1968
57 years old, rebuilt 2003
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
117 ft
2 main spans
Daily traffic
9,300
2023 count
Owner
State
State Highway Agency

About this bridge

Il 47 over Blackberry Creek is a steel continuous stringer/multi-beam or girder carrying Il 47 over Blackberry Creek in Kane County, Illinois. It was built in 1968 and reconstructed in 2003, so it is 57 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 9,300 vehicles a day, roughly 19% of them trucks, projected to reach 11,834 by 2046. The structure is 117 ft (35.6 m) long and 47 ft wide.

CarriesIl 47
CrossesBlackberry Creek
Location1.0 M S of I-88
RouteState Highway 47
Coordinates41.80494, -88.4605
Functional classUrban Other Principal 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating60 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length117 ft (35.6 m)
Longest span55 ft (16.9 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,300 (2023)
Projected traffic11,834 by 2046
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$627,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 47 over Blackberry Creek built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2003.

What condition is Il 47 over Blackberry 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 February 2024.

How much traffic does Il 47 over Blackberry Creek carry?

About 9,300 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is Il 47 over Blackberry Creek?

The structure is 117 ft (35.6 m) long with a longest span of 55 ft (16.9 m) and a deck 47 ft wide.

Who owns Il 47 over Blackberry Creek?

It is owned by the State Highway Agency.