US Bridges

TR 59 over Plum Creek

Good

Washington County, Illinois · 0.25 MI E Okawville · Structure no. 095316000000000

Built
1982
43 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
87 ft
3 main spans
Daily traffic
450
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 59 over Plum Creek is a prestressed concrete box beam or girders - multiple carrying TR 59 over Plum Creek in Washington County, Illinois. It was built in 1982, so it is 43 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 450 vehicles a day, roughly 7% of them trucks, projected to reach 454 by 2046. The structure is 87 ft (26.5 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesTR 59
CrossesPlum Creek
Location0.25 MI E Okawville
RouteCounty Highway 0
Coordinates38.42904, -89.53991
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span35 ft (10.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2024)
Projected traffic454 by 2046
Trucks7%
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 TR 59 over Plum Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is TR 59 over Plum 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 May 2023.

How much traffic does TR 59 over Plum Creek carry?

About 450 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is TR 59 over Plum Creek?

The structure is 87 ft (26.5 m) long with a longest span of 35 ft (10.7 m) and a deck 24 ft wide.

Who owns TR 59 over Plum Creek?

It is owned by the Town or Township Highway Agency.