US Bridges

TR 597 over FAI 172

Good

Adams County, Illinois · .7MI S I172/IL57 · Structure no. 001006700000000

Built
1982
43 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
223 ft
2 main spans
Daily traffic
75
2024 count
Owner
State
State Highway Agency

About this bridge

TR 597 over FAI 172 is a prestressed concrete stringer/multi-beam or girder carrying TR 597 over FAI 172 in Adams 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 75 vehicles a day, projected to reach 76 by 2046. The structure is 223 ft (68 m) long and 33 ft wide.

CarriesTR 597
CrossesFAI 172
Location.7MI S I172/IL57
RouteCounty Highway 0
Coordinates39.77987, -91.3128
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.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.4 US tons
Inventory rating37.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length223 ft (68 m)
Longest span87 ft (26.5 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic76 by 2046
Trucks0%
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 597 over FAI 172 built?

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

What condition is TR 597 over FAI 172 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 January 2025.

How much traffic does TR 597 over FAI 172 carry?

About 75 vehicles per day (2024 count).

How long is TR 597 over FAI 172?

The structure is 223 ft (68 m) long with a longest span of 87 ft (26.5 m) and a deck 33 ft wide.

Who owns TR 597 over FAI 172?

It is owned by the State Highway Agency.