US Bridges

Mine RD TR-111 over Waupecon CR

Good

Grundy County, Illinois · .32 MI E Gonnam RD · Structure no. 032486600000000

Built
1979
46 years old
Condition
Good
inspected October 2024
Type
Channel Beam
Concrete
Length
78 ft
3 main spans
Daily traffic
75
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Mine RD TR-111 over Waupecon CR is a concrete channel beam carrying Mine RD TR-111 over Waupecon CR in Grundy County, Illinois. It was built in 1979, so it is 46 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, roughly 13% of them trucks, projected to reach 90 by 2046. The structure is 78 ft (23.8 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMine RD TR-111
CrossesWaupecon CR
Location.32 MI E Gonnam RD
RouteCounty Highway 0
Coordinates41.22453, -88.52461
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating32.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span26 ft (7.9 m)
Deck width26 ft (8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic90 by 2046
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Mine RD TR-111 over Waupecon CR built?

It was built in 1979, making it 46 years old in 2025.

What condition is Mine RD TR-111 over Waupecon CR 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 October 2024.

How much traffic does Mine RD TR-111 over Waupecon CR carry?

About 75 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Mine RD TR-111 over Waupecon CR?

The structure is 78 ft (23.8 m) long with a longest span of 26 ft (7.9 m) and a deck 26 ft wide.

Who owns Mine RD TR-111 over Waupecon CR?

It is owned by the Town or Township Highway Agency.