US Bridges

TR 172 over S Frk Sangamon River

Fair

Christian County, Illinois · S E Edge Taylorville · Structure no. 011333500000000

Built
1987
38 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
401 ft
5 main spans
Daily traffic
850
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 172 over S Frk Sangamon River is a prestressed concrete box beam or girders - multiple carrying TR 172 over S Frk Sangamon River in Christian County, Illinois. It was built in 1987, so it is 38 years old, younger 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 850 vehicles a day, roughly 4% of them trucks, projected to reach 859 by 2046. The structure is 401 ft (122.2 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 172
CrossesS Frk Sangamon River
LocationS E Edge Taylorville
RouteCounty Highway 0
CountyChristian County
StateIllinois
Coordinates39.53791, -89.2887
Functional classRural Minor Collector

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length401 ft (122.2 m)
Longest span79 ft (24.1 m)
Deck width31 ft (9.3 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2021)
Projected traffic859 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 172 over S Frk Sangamon River built?

It was built in 1987, making it 38 years old in 2025.

What condition is TR 172 over S Frk Sangamon River 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 November 2023.

How much traffic does TR 172 over S Frk Sangamon River carry?

About 850 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is TR 172 over S Frk Sangamon River?

The structure is 401 ft (122.2 m) long with a longest span of 79 ft (24.1 m) and a deck 31 ft wide.

Who owns TR 172 over S Frk Sangamon River?

It is owned by the Town or Township Highway Agency.