US Bridges

County Line Road over County Ditch

Good

Whiteside County, Illinois · 3 MI SE Deer Grove · Structure no. 098440700000000

Built
1966
59 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
71 ft
3 main spans
Daily traffic
75
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

County Line Road over County Ditch is a concrete slab carrying County Line Road over County Ditch in Whiteside County, Illinois. It was built in 1966, so it is 59 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, projected to reach 76 by 2046. The structure is 71 ft (21.5 m) long and 29 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesCounty Line Road
CrossesCounty Ditch
Location3 MI SE Deer Grove
RouteCounty Highway 0
CountyWhiteside County
StateIllinois
Coordinates41.59243, -89.63149
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating50.7 US tons
Inventory rating30.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length71 ft (21.5 m)
Longest span26 ft (8 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2017)
Projected traffic76 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 County Ditch built?

It was built in 1966, making it 59 years old in 2025.

What condition is County Line Road over County Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does County Line Road over County Ditch carry?

About 75 vehicles per day (2017 count).

How long is County Line Road over County Ditch?

The structure is 71 ft (21.5 m) long with a longest span of 26 ft (8 m) and a deck 29 ft wide.

Who owns County Line Road over County Ditch?

It is owned by the Town or Township Highway Agency.