US Bridges

Hinckley Road over E Branch Big Rock CR

PoorPosted for load

Kane County, Illinois · 0.5 MI W Big Rock · Structure no. 045310500000000

Built
1976
49 years old
Condition
Poor
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
90 ft
2 main spans
Daily traffic
200
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hinckley Road over E Branch Big Rock CR is a prestressed concrete box beam or girders - multiple carrying Hinckley Road over E Branch Big Rock CR in Kane County, Illinois. It was built in 1976, so it is 49 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 13% of them trucks, projected to reach 427 by 2046. The structure is 90 ft (27.5 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesHinckley Road
CrossesE Branch Big Rock CR
Location0.5 MI W Big Rock
RouteCounty Highway 0
Coordinates41.76393, -88.56138
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating11 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length90 ft (27.5 m)
Longest span44 ft (13.3 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic427 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hinckley Road over E Branch Big Rock CR built?

It was built in 1976, making it 49 years old in 2025.

What condition is Hinckley Road over E Branch Big Rock CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Hinckley Road over E Branch Big Rock CR carry?

About 200 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Hinckley Road over E Branch Big Rock CR?

The structure is 90 ft (27.5 m) long with a longest span of 44 ft (13.3 m) and a deck 27 ft wide.

Who owns Hinckley Road over E Branch Big Rock CR?

It is owned by the City or Municipal Highway Agency.