US Bridges

W CO Line RD over W Br Big Rock Creek

Fair

Kane County, Illinois · 0.4 MI N Rt 30 · Structure no. 045309000000000

Built
1957
68 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
108 ft
3 main spans
Daily traffic
75
2010 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

W CO Line RD over W Br Big Rock Creek is a concrete continuous slab carrying W CO Line RD over W Br Big Rock Creek in Kane County, Illinois. It was built in 1957, so it is 68 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 75 vehicles a day, projected to reach 92 by 2046. The structure is 108 ft (32.8 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesW CO Line RD
CrossesW Br Big Rock Creek
Location0.4 MI N Rt 30
RouteCounty Highway 0
CountyKane County
StateIllinois
Coordinates41.77471, -88.60214
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating32.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length108 ft (32.8 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2010)
Projected traffic92 by 2046
Trucks0%
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

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 W CO Line RD over W Br Big Rock Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is W CO Line RD over W Br Big Rock 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 April 2023.

How much traffic does W CO Line RD over W Br Big Rock Creek carry?

About 75 vehicles per day (2010 count).

How long is W CO Line RD over W Br Big Rock Creek?

The structure is 108 ft (32.8 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns W CO Line RD over W Br Big Rock Creek?

It is owned by the Town or Township Highway Agency.