US Bridges

TR 59 over Drainage Ditch

Good

Mercer County, Illinois · SW-24-T15NR6W · Structure no. 066551900000000

Built
1995
30 years old
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
75
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 59 over Drainage Ditch is a prestressed concrete box beam or girders - multiple carrying TR 59 over Drainage Ditch in Mercer County, Illinois. It was built in 1995, so it is 30 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 75 vehicles a day, roughly 27% of them trucks, projected to reach 76 by 2046. The structure is 61 ft (18.7 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesTR 59
CrossesDrainage Ditch
LocationSW-24-T15NR6W
RouteCounty Highway 0
Coordinates41.27479, -91.03527
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 protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.1 US tons
Inventory rating42.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length61 ft (18.7 m)
Longest span59 ft (18 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic76 by 2046
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 TR 59 over Drainage Ditch built?

It was built in 1995, making it 30 years old in 2025.

What condition is TR 59 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 December 2024.

How much traffic does TR 59 over Drainage Ditch carry?

About 75 vehicles per day (2024 count), of which roughly 27% are trucks.

How long is TR 59 over Drainage Ditch?

The structure is 61 ft (18.7 m) long with a longest span of 59 ft (18 m) and a deck 24 ft wide.

Who owns TR 59 over Drainage Ditch?

It is owned by the Town or Township Highway Agency.