US Bridges

TR 320 over Trib to Fitch CR

Fair

Knox County, Illinois · SW-24-T13NR4E · Structure no. 048502600000000

Built
1986
39 years old
Condition
Fair
inspected February 2023
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
10
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 320 over Trib to Fitch CR is a steel culvert carrying TR 320 over Trib to Fitch CR in Knox County, Illinois. It was built in 1986, so it is 39 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 10 vehicles a day, projected to reach 10 by 2046. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTR 320
CrossesTrib to Fitch CR
LocationSW-24-T13NR4E
RouteCounty Highway 0
CountyKnox County
StateIllinois
Coordinates41.09077, -90.00399
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98.2 US tons
Inventory rating60.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2046
Trucks0%
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 320 over Trib to Fitch CR built?

It was built in 1986, making it 39 years old in 2025.

What condition is TR 320 over Trib to Fitch CR 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 February 2023.

How much traffic does TR 320 over Trib to Fitch CR carry?

About 10 vehicles per day (2022 count).

How long is TR 320 over Trib to Fitch CR?

The structure is 22 ft (6.7 m) long with a longest span of 9 ft (2.7 m).

Who owns TR 320 over Trib to Fitch CR?

It is owned by the Town or Township Highway Agency.