US Bridges

Thompson Road over Nippersink Creek

Fair

McHenry County, Illinois · 0.03 N Wndrmere RD · Structure no. 056600600000000

Built
2011
14 years old
Condition
Fair
inspected April 2021
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
149 ft
3 main spans
Daily traffic
1,600
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Thompson Road over Nippersink Creek is a steel continuous stringer/multi-beam or girder carrying Thompson Road over Nippersink Creek in McHenry County, Illinois. It was built in 2011, so it is 14 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 1,600 vehicles a day, roughly 6% of them trucks, projected to reach 1,920 by 2046. The structure is 149 ft (45.3 m) long and 43 ft wide.

Location

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CarriesThompson Road
CrossesNippersink Creek
Location0.03 N Wndrmere RD
CountyMcHenry County
StateIllinois
Coordinates42.38543, -88.36968
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2021
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 alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length149 ft (45.3 m)
Longest span60 ft (18.3 m)
Deck width43 ft (13.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2021)
Projected traffic1,920 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Thompson Road over Nippersink Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Thompson Road over Nippersink Creek 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 April 2021.

How much traffic does Thompson Road over Nippersink Creek carry?

About 1,600 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Thompson Road over Nippersink Creek?

The structure is 149 ft (45.3 m) long with a longest span of 60 ft (18.3 m) and a deck 43 ft wide.

Who owns Thompson Road over Nippersink Creek?

It is owned by the City or Municipal Highway Agency.