US Bridges

TR 40 a over I-72

Good

Piatt County, Illinois · 2 MI W Monticello · Structure no. 074006200000000

Built
1975
50 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
248 ft
2 main spans
Daily traffic
75
2020 count
Owner
State
State Highway Agency

About this bridge

TR 40 a over I-72 is a prestressed concrete stringer/multi-beam or girder carrying TR 40 a over I-72 in Piatt County, Illinois. It was built in 1975, so it is 50 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 7% of them trucks, projected to reach 76 by 2046. The structure is 248 ft (75.6 m) long and 30 ft wide.

CarriesTR 40 a
CrossesI-72
Location2 MI W Monticello
RouteCounty Highway 0
Coordinates40.03134, -88.63144
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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40.7 US tons
Inventory rating27.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 15
Structure length248 ft (75.6 m)
Longest span107 ft (32.5 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2020)
Projected traffic76 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 TR 40 a over I-72 built?

It was built in 1975, making it 50 years old in 2025.

What condition is TR 40 a over I-72 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 November 2024.

How much traffic does TR 40 a over I-72 carry?

About 75 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is TR 40 a over I-72?

The structure is 248 ft (75.6 m) long with a longest span of 107 ft (32.5 m) and a deck 30 ft wide.

Who owns TR 40 a over I-72?

It is owned by the State Highway Agency.