US Bridges

Ill 146 over Buck Run Creek

Good

Johnson County, Illinois · 1.2 MI E Union CO · Structure no. 044005900000000

Built
2008
17 years old
Condition
Good
inspected April 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
92 ft
1 main span
Daily traffic
2,250
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 146 over Buck Run Creek is a steel stringer/multi-beam or girder carrying Ill 146 over Buck Run Creek in Johnson County, Illinois. It was built in 2008, so it is 17 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,250 vehicles a day, roughly 15% of them trucks, projected to reach 2,730 by 2046. The structure is 92 ft (28.1 m) long and 39 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesIll 146
CrossesBuck Run Creek
Location1.2 MI E Union CO
RouteState Highway 146
CountyJohnson County
StateIllinois
Coordinates37.43765, -89.02395
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.9 US tons
Inventory rating50.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length92 ft (28.1 m)
Longest span90 ft (27.3 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11.1 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 Buck Run Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Ill 146 over Buck Run Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2022.

How much traffic does Ill 146 over Buck Run Creek carry?

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

How long is Ill 146 over Buck Run Creek?

The structure is 92 ft (28.1 m) long with a longest span of 90 ft (27.3 m) and a deck 39 ft wide.

Who owns Ill 146 over Buck Run Creek?

It is owned by the State Highway Agency.