US Bridges

TR 139 over Sangamon River

Fair

Champaign County, Illinois · 2.6 MI SW Mahomet · Structure no. 010418900000000

Built
1981
44 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
267 ft
4 main spans
Daily traffic
225
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 139 over Sangamon River is a prestressed concrete box beam or girders - multiple carrying TR 139 over Sangamon River in Champaign County, Illinois. It was built in 1981, so it is 44 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 225 vehicles a day, roughly 2% of them trucks, projected to reach 227 by 2046. The structure is 267 ft (81.4 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesTR 139
CrossesSangamon River
Location2.6 MI SW Mahomet
RouteCounty Highway 0
Coordinates40.17116, -88.44631
Functional classUrban 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length267 ft (81.4 m)
Longest span76 ft (23.2 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2021)
Projected traffic227 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 139 over Sangamon River built?

It was built in 1981, making it 44 years old in 2025.

What condition is TR 139 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 April 2023.

How much traffic does TR 139 over Sangamon River carry?

About 225 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is TR 139 over Sangamon River?

The structure is 267 ft (81.4 m) long with a longest span of 76 ft (23.2 m) and a deck 24 ft wide.

Who owns TR 139 over Sangamon River?

It is owned by the Town or Township Highway Agency.