US Bridges

County Line Road over Br S Br Kishwaukee R

Fair

DeKalb County, Illinois · 3440N 030E · Structure no. 019401200000000

Built
1980
45 years old
Condition
Fair
inspected April 2024
Type
Channel Beam
Concrete
Length
28 ft
1 main span
Daily traffic
150
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

County Line Road over Br S Br Kishwaukee R is a concrete channel beam carrying County Line Road over Br S Br Kishwaukee R in DeKalb County, Illinois. It was built in 1980, so it is 45 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 150 vehicles a day, roughly 47% of them trucks, projected to reach 168 by 2046. The structure is 28 ft (8.4 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Line Road
CrossesBr S Br Kishwaukee R
Location3440N 030E
RouteCounty Highway 0
CountyDeKalb County
StateIllinois
Coordinates42.12864, -88.93956
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length28 ft (8.4 m)
Longest span25 ft (7.6 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic168 by 2046
Trucks47%
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 County Line Road over Br S Br Kishwaukee R built?

It was built in 1980, making it 45 years old in 2025.

What condition is County Line Road over Br S Br Kishwaukee R 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 2024.

How much traffic does County Line Road over Br S Br Kishwaukee R carry?

About 150 vehicles per day (2021 count), of which roughly 47% are trucks.

How long is County Line Road over Br S Br Kishwaukee R?

The structure is 28 ft (8.4 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.

Who owns County Line Road over Br S Br Kishwaukee R?

It is owned by the Town or Township Highway Agency.