US Bridges

TR 178 over S Henderson CR

PoorPosted for load

Henderson County, Illinois · SW-22-T10NR4W · Structure no. 036421200000000

Built
1915
110 years old
Condition
Poor
inspected February 2023
Type
Truss - Thru
Steel
Length
72 ft
1 main span
Daily traffic
25
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 178 over S Henderson CR is a steel truss - thru carrying TR 178 over S Henderson CR in Henderson County, Illinois. It was built in 1915, so it is 110 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 3 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: posted for load restriction.

It carries about 25 vehicles a day, projected to reach 25 by 2046. The structure is 72 ft (21.9 m) long and 14 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 178
CrossesS Henderson CR
LocationSW-22-T10NR4W
RouteCounty Highway 0
CountyHenderson County
StateIllinois
Coordinates40.84145, -90.84541
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating9.6 US tons
Inventory rating5.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length72 ft (21.9 m)
Longest span70 ft (21.3 m)
Deck width14 ft (4.2 m)
Roadway width14 ft (4.2 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 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 statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$132,000
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 178 over S Henderson CR built?

It was built in 1915, making it 110 years old in 2025.

What condition is TR 178 over S Henderson CR 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 February 2023.

How much traffic does TR 178 over S Henderson CR carry?

About 25 vehicles per day (2021 count).

How long is TR 178 over S Henderson CR?

The structure is 72 ft (21.9 m) long with a longest span of 70 ft (21.3 m) and a deck 14 ft wide.

Who owns TR 178 over S Henderson CR?

It is owned by the Town or Township Highway Agency.