US Bridges

Hemmingson Rd. over S.Br.Kishwaukee Riv.

Good

McHenry County, Illinois · 2.0M.E.OF Union · Structure no. 056315200000000

Built
1991
34 years old
Condition
Good
inspected October 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
126 ft
3 main spans
Daily traffic
500
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Hemmingson Rd. over S.Br.Kishwaukee Riv. is a prestressed concrete box beam or girders - multiple carrying Hemmingson Rd. over S.Br.Kishwaukee Riv. in McHenry County, Illinois. It was built in 1991, so it is 34 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 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 500 vehicles a day, roughly 7% of them trucks, projected to reach 600 by 2046. The structure is 126 ft (38.5 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHemmingson Rd.
CrossesS.Br.Kishwaukee Riv.
Location2.0M.E.OF Union
RouteCounty Highway 0
CountyMcHenry County
StateIllinois
Coordinates42.22603, -88.50804
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.5 US tons
Inventory rating47.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length126 ft (38.5 m)
Longest span42 ft (12.8 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2021)
Projected traffic600 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 Hemmingson Rd. over S.Br.Kishwaukee Riv. built?

It was built in 1991, making it 34 years old in 2025.

What condition is Hemmingson Rd. over S.Br.Kishwaukee Riv. 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 October 2022.

How much traffic does Hemmingson Rd. over S.Br.Kishwaukee Riv. carry?

About 500 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Hemmingson Rd. over S.Br.Kishwaukee Riv.?

The structure is 126 ft (38.5 m) long with a longest span of 42 ft (12.8 m) and a deck 27 ft wide.

Who owns Hemmingson Rd. over S.Br.Kishwaukee Riv.?

It is owned by the Town or Township Highway Agency.