US Bridges

T.R.61BASE Line Ro over Coon Creek

Good

DeKalb County, Illinois · 3000N 1775E · Structure no. 019421300000000

Built
2019
6 years old
Condition
Good
inspected August 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
1,200
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T.R.61BASE Line Ro over Coon Creek is a prestressed concrete stringer/multi-beam or girder carrying T.R.61BASE Line Ro over Coon Creek in DeKalb County, Illinois. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,200 vehicles a day, roughly 48% of them trucks, projected to reach 1,344 by 2046. The structure is 56 ft (17 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesT.R.61BASE Line Ro
CrossesCoon Creek
Location3000N 1775E
RouteCounty Highway 0
CountyDeKalb County
StateIllinois
Coordinates42.06647, -88.60634
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length56 ft (17 m)
Longest span52 ft (16 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2021)
Projected traffic1,344 by 2046
Trucks48%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 T.R.61BASE Line Ro over Coon Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is T.R.61BASE Line Ro over Coon Creek 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 August 2021.

How much traffic does T.R.61BASE Line Ro over Coon Creek carry?

About 1,200 vehicles per day (2021 count), of which roughly 48% are trucks.

How long is T.R.61BASE Line Ro over Coon Creek?

The structure is 56 ft (17 m) long with a longest span of 52 ft (16 m) and a deck 30 ft wide.

Who owns T.R.61BASE Line Ro over Coon Creek?

It is owned by the Town or Township Highway Agency.