US Bridges

Ill 146 over Trib of Buck Run

FairPosted for load

Johnson County, Illinois · 1.9M E.Union Co. · Structure no. 044200800000000

Built
1930
95 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
2,250
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 146 over Trib of Buck Run is a concrete culvert carrying Ill 146 over Trib of Buck Run in Johnson County, Illinois. It was built in 1930, so it is 95 years old, older 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. Its operating status is: posted for load restriction.

It carries about 2,250 vehicles a day, roughly 15% of them trucks, projected to reach 2,730 by 2046. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesIll 146
CrossesTrib of Buck Run
Location1.9M E.Union Co.
RouteState Highway 146
CountyJohnson County
StateIllinois
Coordinates37.43306, -89.01204
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.5 US tons
Inventory rating19.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,250 (2023)
Projected traffic2,730 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ill 146 over Trib of Buck Run built?

It was built in 1930, making it 95 years old in 2025.

What condition is Ill 146 over Trib of Buck Run 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 2024.

How much traffic does Ill 146 over Trib of Buck Run carry?

About 2,250 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Ill 146 over Trib of Buck Run?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m).

Who owns Ill 146 over Trib of Buck Run?

It is owned by the State Highway Agency.