US Bridges

Mc Cornack Road over Tyler Creek

Fair

Kane County, Illinois · 0.7 MI N Big Timber · Structure no. 045306300000000

Built
1959
66 years old, rebuilt 2005
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
2 main spans
Daily traffic
475
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Mc Cornack Road over Tyler Creek is a prestressed concrete box beam or girders - multiple carrying Mc Cornack Road over Tyler Creek in Kane County, Illinois. It was built in 1959 and reconstructed in 2005, 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 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 475 vehicles a day, roughly 6% of them trucks, projected to reach 458 by 2046. The structure is 61 ft (18.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMc Cornack Road
CrossesTyler Creek
Location0.7 MI N Big Timber
RouteCounty Highway 0
Coordinates42.08977, -88.37984
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating84.3 US tons
Inventory rating50.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 15
Structure length61 ft (18.6 m)
Longest span29 ft (8.7 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2023)
Projected traffic458 by 2046
Trucks6%
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$128,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mc Cornack Road over Tyler Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2005.

What condition is Mc Cornack Road over Tyler 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 May 2023.

How much traffic does Mc Cornack Road over Tyler Creek carry?

About 475 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Mc Cornack Road over Tyler Creek?

The structure is 61 ft (18.6 m) long with a longest span of 29 ft (8.7 m) and a deck 26 ft wide.

Who owns Mc Cornack Road over Tyler Creek?

It is owned by the Town or Township Highway Agency.