US Bridges

TR 343 over S. Fork Sangamon R.

PoorClosed to traffic

Christian County, Illinois · 8 W of Rosamond · Structure no. 011326500000000

Built
1900
125 years old
Condition
Poor
inspected November 2023
Type
Truss - Thru
Steel
Length
80 ft
1 main span
Daily traffic
25
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 343 over S. Fork Sangamon R. is a steel truss - thru carrying TR 343 over S. Fork Sangamon R. in Christian County, Illinois. It was built in 1900, so it is 125 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 0 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 25 vehicles a day, projected to reach 25 by 2046. The structure is 80 ft (24.4 m) long and 13 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTR 343
CrossesS. Fork Sangamon R.
Location8 W of Rosamond
RouteCounty Highway 0
CountyChristian County
StateIllinois
Coordinates39.37089, -89.30778
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck0 FailedOut of service and beyond corrective action.
Superstructure0 FailedOut of service and beyond corrective action.
Substructure0 FailedOut of service and beyond corrective action.
Channel and channel protection0 FailedOut of service and beyond corrective action.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy0: Immediate repair necessary to put back in service
Approach roadway alignment0: Immediate repair necessary to put back in service
Operating rating4.6 US tons
Inventory rating2.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+1 approach)
Design loadUnknown
Structure length80 ft (24.4 m)
Longest span49 ft (14.9 m)
Deck width13 ft (4.1 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2021)
Projected traffic25 by 2046
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$144,000
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 343 over S. Fork Sangamon R. built?

It was built in 1900, making it 125 years old in 2025.

What condition is TR 343 over S. Fork Sangamon R. in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.

How much traffic does TR 343 over S. Fork Sangamon R. carry?

About 25 vehicles per day (2021 count).

How long is TR 343 over S. Fork Sangamon R.?

The structure is 80 ft (24.4 m) long with a longest span of 49 ft (14.9 m) and a deck 13 ft wide.

Who owns TR 343 over S. Fork Sangamon R.?

It is owned by the Town or Township Highway Agency.