US Bridges

Old Il 121 over Sugar Creek

Fair

Logan County, Illinois · 2.5MI SE Hartsburg · Structure no. 054010200000000

Built
1999
26 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
510 ft
5 main spans
Daily traffic
1,200
2022 count
Owner
State
State Highway Agency

About this bridge

Old Il 121 over Sugar Creek is a steel continuous stringer/multi-beam or girder carrying Old Il 121 over Sugar Creek in Logan County, Illinois. It was built in 1999, so it is 26 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 1,200 vehicles a day, roughly 9% of them trucks, projected to reach 1,260 by 2046. The structure is 510 ft (155.5 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesOld Il 121
CrossesSugar Creek
Location2.5MI SE Hartsburg
RouteCounty Highway 0
CountyLogan County
StateIllinois
Coordinates40.22008, -89.41228
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.5 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length510 ft (155.5 m)
Longest span138 ft (42 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2022)
Projected traffic1,260 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Old Il 121 over Sugar Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Old Il 121 over Sugar Creek 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 November 2023.

How much traffic does Old Il 121 over Sugar Creek carry?

About 1,200 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Old Il 121 over Sugar Creek?

The structure is 510 ft (155.5 m) long with a longest span of 138 ft (42 m) and a deck 35 ft wide.

Who owns Old Il 121 over Sugar Creek?

It is owned by the State Highway Agency.