US Bridges

US 34 over Blackberry Creek

Good

Kendall County, Illinois · 0.51 MI W of Ill 47 · Structure no. 047010200000000

Built
2019
6 years old
Condition
Good
inspected March 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
147 ft
2 main spans
Daily traffic
22,400
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 over Blackberry Creek is a steel continuous stringer/multi-beam or girder carrying US 34 over Blackberry Creek in Kendall County, Illinois. It was built in 2019, so it is 6 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 22,400 vehicles a day, roughly 6% of them trucks, projected to reach 26,600 by 2046. The structure is 147 ft (44.7 m) long and 81 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 34
CrossesBlackberry Creek
Location0.51 MI W of Ill 47
RouteU.S. Route 34
CountyKendall County
StateIllinois
Coordinates41.65896, -88.45206
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 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 rating68.6 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length147 ft (44.7 m)
Longest span83 ft (25.4 m)
Deck width81 ft (24.7 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,400 (2023)
Projected traffic26,600 by 2046
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 US 34 over Blackberry Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is US 34 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 March 2021.

How much traffic does US 34 over Blackberry Creek carry?

About 22,400 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 34 over Blackberry Creek?

The structure is 147 ft (44.7 m) long with a longest span of 83 ft (25.4 m) and a deck 81 ft wide.

Who owns US 34 over Blackberry Creek?

It is owned by the State Highway Agency.