US Bridges

TR 323 over Nickelson Creek

Good

Marion County, Illinois · 3.5 MI N Helm · Structure no. 061328900000000

Built
2003
22 years old
Condition
Good
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
87 ft
3 main spans
Daily traffic
10
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 323 over Nickelson Creek is a prestressed concrete box beam or girders - multiple carrying TR 323 over Nickelson Creek in Marion County, Illinois. It was built in 2003, so it is 22 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, roughly 20% of them trucks, projected to reach 10 by 2046. The structure is 87 ft (26.4 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesTR 323
CrossesNickelson Creek
Location3.5 MI N Helm
RouteCounty Highway 0
Coordinates38.56588, -88.70706
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length87 ft (26.4 m)
Longest span25 ft (7.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2046
Trucks20%
Lanes on structure2
Traffic directionTwo-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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 323 over Nickelson Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is TR 323 over Nickelson 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 January 2023.

How much traffic does TR 323 over Nickelson Creek carry?

About 10 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is TR 323 over Nickelson Creek?

The structure is 87 ft (26.4 m) long with a longest span of 25 ft (7.6 m) and a deck 24 ft wide.

Who owns TR 323 over Nickelson Creek?

It is owned by the Town or Township Highway Agency.