US Bridges

Concord Drive over Blackberry Creek

Good

Kendall County, Illinois · 0.2 MI NW Galena RD · Structure no. 047660100000000

Built
2002
23 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
158 ft
3 main spans
Daily traffic
5,050
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Concord Drive over Blackberry Creek is a prestressed concrete stringer/multi-beam or girder carrying Concord Drive over Blackberry Creek in Kendall County, Illinois. It was built in 2002, so it is 23 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 5,050 vehicles a day, roughly 7% of them trucks, projected to reach 5,719 by 2046. The structure is 158 ft (48.3 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesConcord Drive
CrossesBlackberry Creek
Location0.2 MI NW Galena RD
Coordinates41.71241, -88.38941
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length158 ft (48.3 m)
Longest span62 ft (18.9 m)
Deck width52 ft (15.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,050 (2024)
Projected traffic5,719 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
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 Concord Drive over Blackberry Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Concord Drive 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 June 2024.

How much traffic does Concord Drive over Blackberry Creek carry?

About 5,050 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Concord Drive over Blackberry Creek?

The structure is 158 ft (48.3 m) long with a longest span of 62 ft (18.9 m) and a deck 52 ft wide.

Who owns Concord Drive over Blackberry Creek?

It is owned by the City or Municipal Highway Agency.