US Bridges

Iberg Rd/ TR 355 over Sugar Creek

Fair

Madison County, Illinois · 1.3 MI SE Highland · Structure no. 060323500000000

Built
1982
43 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
168 ft
3 main spans
Daily traffic
475
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Iberg Rd/ TR 355 over Sugar Creek is a prestressed concrete box beam or girders - multiple carrying Iberg Rd/ TR 355 over Sugar Creek in Madison County, Illinois. It was built in 1982, so it is 43 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 475 vehicles a day, roughly 8% of them trucks, projected to reach 508 by 2046. The structure is 168 ft (51.2 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIberg Rd/ TR 355
CrossesSugar Creek
Location1.3 MI SE Highland
RouteCounty Highway 0
CountyMadison County
StateIllinois
Coordinates38.7106, -89.64904
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length168 ft (51.2 m)
Longest span55 ft (16.8 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2021)
Projected traffic508 by 2046
Trucks8%
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

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 Iberg Rd/ TR 355 over Sugar Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Iberg Rd/ TR 355 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 2024.

How much traffic does Iberg Rd/ TR 355 over Sugar Creek carry?

About 475 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Iberg Rd/ TR 355 over Sugar Creek?

The structure is 168 ft (51.2 m) long with a longest span of 55 ft (16.8 m) and a deck 30 ft wide.

Who owns Iberg Rd/ TR 355 over Sugar Creek?

It is owned by the Town or Township Highway Agency.