US Bridges

Jefferson Street over Mokeler Creek

Fair

McHenry County, Illinois · 0.06 MI N. of Brink · Structure no. 056620000000000

Built
1920
105 years old, rebuilt 2006
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
250
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Jefferson Street over Mokeler Creek is a concrete slab carrying Jefferson Street over Mokeler Creek in McHenry County, Illinois. It was built in 1920 and reconstructed in 2006, so it is 105 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 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 250 vehicles a day, roughly 14% of them trucks, projected to reach 300 by 2046. The structure is 23 ft (7.1 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesJefferson Street
CrossesMokeler Creek
Location0.06 MI N. of Brink
RouteCity Street 0
Coordinates42.41557, -88.61099
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7.1 m)
Longest span23 ft (6.9 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2021)
Projected traffic300 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$48,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Jefferson Street over Mokeler Creek built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2006.

What condition is Jefferson Street 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 August 2023.

How much traffic does Jefferson Street over Mokeler Creek carry?

About 250 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is Jefferson Street over Mokeler Creek?

The structure is 23 ft (7.1 m) long with a longest span of 23 ft (6.9 m) and a deck 25 ft wide.

Who owns Jefferson Street over Mokeler Creek?

It is owned by the City or Municipal Highway Agency.