US Bridges

Black RD over Drainage Ditch

Good

Whiteside County, Illinois · 5 MI SW of Morrison · Structure no. 098004200000000

Built
1965
60 years old, rebuilt 2018
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
95 ft
3 main spans
Daily traffic
725
2021 count
Owner
County
County Highway Agency

About this bridge

Black RD over Drainage Ditch is a concrete continuous slab carrying Black RD over Drainage Ditch in Whiteside County, Illinois. It was built in 1965 and reconstructed in 2018, so it is 60 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 725 vehicles a day, roughly 23% of them trucks, projected to reach 732 by 2046. The structure is 95 ft (29 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesBlack RD
CrossesDrainage Ditch
Location5 MI SW of Morrison
RouteCounty Highway 0
Coordinates41.72864, -90.02646
Functional classRural Major Collector

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length95 ft (29 m)
Longest span33 ft (10.2 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic725 (2021)
Projected traffic732 by 2046
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Black RD over Drainage Ditch built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2018.

What condition is Black RD over Drainage 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 March 2023.

How much traffic does Black RD over Drainage Ditch carry?

About 725 vehicles per day (2021 count), of which roughly 23% are trucks.

How long is Black RD over Drainage Ditch?

The structure is 95 ft (29 m) long with a longest span of 33 ft (10.2 m) and a deck 30 ft wide.

Who owns Black RD over Drainage Ditch?

It is owned by the County Highway Agency.