US Bridges

TR 172 over FAI 80

Fair

Henry County, Illinois · 1.0 MI W of Geneseo · Structure no. 037011100000000

Built
1961
64 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete Continuous
Length
228 ft
4 main spans
Daily traffic
300
2020 count
Owner
State
State Highway Agency

About this bridge

TR 172 over FAI 80 is a concrete continuous tee beam carrying TR 172 over FAI 80 in Henry County, Illinois. It was built in 1961, so it is 64 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 300 vehicles a day, roughly 6% of them trucks, projected to reach 324 by 2046. The structure is 228 ft (69.5 m) long and 30 ft wide. If it were closed, the detour would be 75.2 mi (121 km).

Location

Open in Google Maps
CarriesTR 172
CrossesFAI 80
Location1.0 MI W of Geneseo
RouteCounty Highway 0
CountyHenry County
StateIllinois
Coordinates41.44062, -90.18225
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.6 US tons
Inventory rating25 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length228 ft (69.5 m)
Longest span68 ft (20.7 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2020)
Projected traffic324 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed75.2 mi (121 km)
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$162,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was TR 172 over FAI 80 built?

It was built in 1961, making it 64 years old in 2025.

What condition is TR 172 over FAI 80 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does TR 172 over FAI 80 carry?

About 300 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is TR 172 over FAI 80?

The structure is 228 ft (69.5 m) long with a longest span of 68 ft (20.7 m) and a deck 30 ft wide.

Who owns TR 172 over FAI 80?

It is owned by the State Highway Agency.