US Bridges

Highbridge RD over S Br Kishwaukee Riv

Fair

McHenry County, Illinois · 0.7 MI N of Union · Structure no. 056315400000000

Built
1992
33 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
650
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Highbridge RD over S Br Kishwaukee Riv is a prestressed concrete box beam or girders - multiple carrying Highbridge RD over S Br Kishwaukee Riv in McHenry County, Illinois. It was built in 1992, so it is 33 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 5 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 650 vehicles a day, roughly 7% of them trucks, projected to reach 780 by 2046. The structure is 180 ft (54.9 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHighbridge RD
CrossesS Br Kishwaukee Riv
Location0.7 MI N of Union
RouteCounty Highway 0
CountyMcHenry County
StateIllinois
Coordinates42.24071, -88.52755
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span60 ft (18.3 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2021)
Projected traffic780 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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Highbridge RD over S Br Kishwaukee Riv built?

It was built in 1992, making it 33 years old in 2025.

What condition is Highbridge RD over S Br Kishwaukee Riv 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 October 2024.

How much traffic does Highbridge RD over S Br Kishwaukee Riv carry?

About 650 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Highbridge RD over S Br Kishwaukee Riv?

The structure is 180 ft (54.9 m) long with a longest span of 60 ft (18.3 m) and a deck 27 ft wide.

Who owns Highbridge RD over S Br Kishwaukee Riv?

It is owned by the Town or Township Highway Agency.