US Bridges

TR 121 over Garfield Creek

Good

Iroquois County, Illinois · 1MI S .5MI W of Iroquois · Structure no. 038375700000000

Built
2023
2 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
75
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 121 over Garfield Creek is a prestressed concrete box beam or girders - multiple carrying TR 121 over Garfield Creek in Iroquois County, Illinois. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, roughly 13% of them trucks, projected to reach 75 by 2032. The structure is 70 ft (21.3 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesTR 121
CrossesGarfield Creek
Location1MI S .5MI W of Iroquois
RouteCounty Highway 0
Coordinates40.81354, -87.59061
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating51.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length70 ft (21.3 m)
Longest span67 ft (20.4 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic75 by 2032
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was TR 121 over Garfield Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is TR 121 over Garfield 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 June 2023.

How much traffic does TR 121 over Garfield Creek carry?

About 75 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is TR 121 over Garfield Creek?

The structure is 70 ft (21.3 m) long with a longest span of 67 ft (20.4 m) and a deck 30 ft wide.

Who owns TR 121 over Garfield Creek?

It is owned by the Town or Township Highway Agency.