US Bridges

Derbyline RD (tr 5 over Cn/Ic RR

Good

DeKalb County, Illinois · 3100N 1420E · Structure no. 019420900000000

Built
1989
36 years old
Condition
Good
inspected April 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
189 ft
3 main spans
Daily traffic
1,100
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Derbyline RD (tr 5 over Cn/Ic RR is a steel continuous stringer/multi-beam or girder carrying Derbyline RD (tr 5 over Cn/Ic RR in DeKalb County, Illinois. It was built in 1989, so it is 36 years old, younger 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 1,100 vehicles a day, roughly 40% of them trucks, projected to reach 1,232 by 2046. The structure is 189 ft (57.7 m) long and 28 ft wide.

Location

Open in Google Maps
CarriesDerbyline RD (tr 5
CrossesCn/Ic RR
Location3100N 1420E
RouteCounty Highway 0
CountyDeKalb County
StateIllinois
Coordinates42.08097, -88.67595
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.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length189 ft (57.7 m)
Longest span69 ft (20.9 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2021)
Projected traffic1,232 by 2046
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Derbyline RD (tr 5 over Cn/Ic RR built?

It was built in 1989, making it 36 years old in 2025.

What condition is Derbyline RD (tr 5 over Cn/Ic RR 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 April 2022.

How much traffic does Derbyline RD (tr 5 over Cn/Ic RR carry?

About 1,100 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is Derbyline RD (tr 5 over Cn/Ic RR?

The structure is 189 ft (57.7 m) long with a longest span of 69 ft (20.9 m) and a deck 28 ft wide.

Who owns Derbyline RD (tr 5 over Cn/Ic RR?

It is owned by the Town or Township Highway Agency.