US Bridges

Il 64 over Kilbuck Creek

Fair

Ogle County, Illinois · .5 MI W Dekalb CO · Structure no. 071009200000000

Built
2005
20 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
68 ft
2 main spans
Daily traffic
4,300
2023 count
Owner
State
State Highway Agency

About this bridge

Il 64 over Kilbuck Creek is a concrete continuous slab carrying Il 64 over Kilbuck Creek in Ogle County, Illinois. It was built in 2005, so it is 20 years old, younger 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 4,300 vehicles a day, roughly 16% of them trucks, projected to reach 4,368 by 2046. The structure is 68 ft (20.7 m) long and 39 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesIl 64
CrossesKilbuck Creek
Location.5 MI W Dekalb CO
RouteState Highway 64
CountyOgle County
StateIllinois
Coordinates42.00785, -88.95344
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating69.7 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length68 ft (20.7 m)
Longest span32 ft (9.9 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,300 (2023)
Projected traffic4,368 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Il 64 over Kilbuck Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Il 64 over Kilbuck 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 September 2023.

How much traffic does Il 64 over Kilbuck Creek carry?

About 4,300 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Il 64 over Kilbuck Creek?

The structure is 68 ft (20.7 m) long with a longest span of 32 ft (9.9 m) and a deck 39 ft wide.

Who owns Il 64 over Kilbuck Creek?

It is owned by the State Highway Agency.