US Bridges

Big Mound Rd. over Br. Kilbuck Cr.

Fair

Ogle County, Illinois · 2.5 N.W. Lindenwood · Structure no. 071502100000000

Built
1958
67 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
500
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Big Mound Rd. over Br. Kilbuck Cr. is a concrete culvert carrying Big Mound Rd. over Br. Kilbuck Cr. in Ogle County, Illinois. It was built in 1958, so it is 67 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 500 vehicles a day, roughly 4% of them trucks, projected to reach 260 by 2046. The structure is 26 ft (7.8 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesBig Mound Rd.
CrossesBr. Kilbuck Cr.
Location2.5 N.W. Lindenwood
RouteCounty Highway 0
CountyOgle County
StateIllinois
Coordinates42.07848, -89.05856
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 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 rating37.8 US tons
Inventory rating22.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 15
Structure length26 ft (7.8 m)
Longest span12 ft (3.7 m)
Deck width27 ft (8.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2022)
Projected traffic260 by 2046
Trucks4%
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 Big Mound Rd. over Br. Kilbuck Cr. built?

It was built in 1958, making it 67 years old in 2025.

What condition is Big Mound Rd. over Br. Kilbuck Cr. 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 July 2023.

How much traffic does Big Mound Rd. over Br. Kilbuck Cr. carry?

About 500 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Big Mound Rd. over Br. Kilbuck Cr.?

The structure is 26 ft (7.8 m) long with a longest span of 12 ft (3.7 m) and a deck 27 ft wide.

Who owns Big Mound Rd. over Br. Kilbuck Cr.?

It is owned by the Town or Township Highway Agency.