US Bridges

County Line RD over Geryune Creek

Good

McHenry County, Illinois · 0.8 N of Dunham Road · Structure no. 056500400000000

Built
1959
66 years old
Condition
Good
inspected October 2024
Type
Culvert
Steel
Length
27 ft
3 main spans
Daily traffic
1,000
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

County Line RD over Geryune Creek is a steel culvert carrying County Line RD over Geryune Creek in McHenry County, Illinois. It was built in 1959, so it is 66 years old, older 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 1,000 vehicles a day, roughly 7% of them trucks, projected to reach 1,200 by 2046. The structure is 27 ft (8.2 m) long and 45 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCounty Line RD
CrossesGeryune Creek
Location0.8 N of Dunham Road
RouteCounty Highway 0
CountyMcHenry County
StateIllinois
Coordinates42.35437, -88.70563
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating17.5 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span8 ft (2.4 m)
Deck width45 ft (13.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2021)
Projected traffic1,200 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 County Line RD over Geryune Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is County Line RD over Geryune 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 October 2024.

How much traffic does County Line RD over Geryune Creek carry?

About 1,000 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is County Line RD over Geryune Creek?

The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m) and a deck 45 ft wide.

Who owns County Line RD over Geryune Creek?

It is owned by the Town or Township Highway Agency.