US Bridges

TR 100 over Sangamon River

Fair

Piatt County, Illinois · 2.5 SW White Heath · Structure no. 074327100000000

Built
2002
23 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
352 ft
3 main spans
Daily traffic
350
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 100 over Sangamon River is a steel stringer/multi-beam or girder carrying TR 100 over Sangamon River in Piatt County, Illinois. It was built in 2002, so it is 23 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 350 vehicles a day, roughly 1% of them trucks, projected to reach 354 by 2046. The structure is 352 ft (107.4 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTR 100
CrossesSangamon River
Location2.5 SW White Heath
RouteCounty Highway 0
CountyPiatt County
StateIllinois
Coordinates40.07471, -88.55622
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length352 ft (107.4 m)
Longest span138 ft (42 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2020)
Projected traffic354 by 2046
Trucks1%
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 100 over Sangamon River built?

It was built in 2002, making it 23 years old in 2025.

What condition is TR 100 over 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 January 2025.

How much traffic does TR 100 over Sangamon River carry?

About 350 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is TR 100 over Sangamon River?

The structure is 352 ft (107.4 m) long with a longest span of 138 ft (42 m) and a deck 31 ft wide.

Who owns TR 100 over Sangamon River?

It is owned by the Town or Township Highway Agency.