US Bridges

Island Road over Mokeler Creek

Fair

McHenry County, Illinois · 1.1 MI N Streit RD · Structure no. 056304400000000

Built
1926
99 years old, rebuilt 1970
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
32 ft
3 main spans
Daily traffic
600
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Island Road over Mokeler Creek is a steel culvert carrying Island Road over Mokeler Creek in McHenry County, Illinois. It was built in 1926 and reconstructed in 1970, so it is 99 years old, older 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 600 vehicles a day, roughly 15% of them trucks, projected to reach 720 by 2046. The structure is 32 ft (9.9 m) long.

Location

Open in Google Maps
CarriesIsland Road
CrossesMokeler Creek
Location1.1 MI N Streit RD
RouteCounty Highway 0
CountyMcHenry County
StateIllinois
Coordinates42.40218, -88.66687
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length32 ft (9.9 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2021)
Projected traffic720 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Island Road over Mokeler Creek built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 1970.

What condition is Island Road over Mokeler 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 October 2024.

How much traffic does Island Road over Mokeler Creek carry?

About 600 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Island Road over Mokeler Creek?

The structure is 32 ft (9.9 m) long with a longest span of 8 ft (2.4 m).

Who owns Island Road over Mokeler Creek?

It is owned by the Town or Township Highway Agency.