US Bridges

US 34 over Fox River

Fair

Kendall County, Illinois · US 34 & Fox River · Structure no. 047005000000000

Built
1993
32 years old
Condition
Fair
inspected January 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
343 ft
4 main spans
Daily traffic
16,300
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 over Fox River is a prestressed concrete stringer/multi-beam or girder carrying US 34 over Fox River in Kendall County, Illinois. It was built in 1993, so it is 32 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 16,300 vehicles a day, roughly 3% of them trucks, projected to reach 10,374 by 2046. The structure is 343 ft (104.5 m) long and 65 ft wide.

CarriesUS 34
CrossesFox River
LocationUS 34 & Fox River
RouteU.S. Route 34
Coordinates41.68511, -88.35707
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating89.3 US tons
Inventory rating48.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length343 ft (104.5 m)
Longest span96 ft (29.3 m)
Deck width65 ft (19.8 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,300 (2023)
Projected traffic10,374 by 2046
Trucks3%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 34 over Fox River built?

It was built in 1993, making it 32 years old in 2025.

What condition is US 34 over Fox River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2022.

How much traffic does US 34 over Fox River carry?

About 16,300 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is US 34 over Fox River?

The structure is 343 ft (104.5 m) long with a longest span of 96 ft (29.3 m) and a deck 65 ft wide.

Who owns US 34 over Fox River?

It is owned by the State Highway Agency.