US Bridges

Ill 64 over Kilbuck Cr. Trib

Fair

Ogle County, Illinois · 1.5 MI W Dekalb CO · Structure no. 071009100000000

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

About this bridge

Ill 64 over Kilbuck Cr. Trib is a concrete continuous slab carrying Ill 64 over Kilbuck Cr. Trib 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 64 ft (19.5 m) long and 39 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesIll 64
CrossesKilbuck Cr. Trib
Location1.5 MI W Dekalb CO
RouteState Highway 64
CountyOgle County
StateIllinois
Coordinates42.00767, -88.97094
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 rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span31 ft (9.4 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 Ill 64 over Kilbuck Cr. Trib built?

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

What condition is Ill 64 over Kilbuck Cr. Trib 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 Ill 64 over Kilbuck Cr. Trib carry?

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

How long is Ill 64 over Kilbuck Cr. Trib?

The structure is 64 ft (19.5 m) long with a longest span of 31 ft (9.4 m) and a deck 39 ft wide.

Who owns Ill 64 over Kilbuck Cr. Trib?

It is owned by the State Highway Agency.