US Bridges

Il 255 SB over Poag RD NSRR

Fair

Madison County, Illinois · 2.5 MI N of I-270 · Structure no. 060027500000000

Built
1995
30 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
269 ft
4 main spans
Daily traffic
33,700
2023 count
Owner
State
State Highway Agency

About this bridge

Il 255 SB over Poag RD NSRR is a steel continuous stringer/multi-beam or girder carrying Il 255 SB over Poag RD NSRR in Madison County, Illinois. It was built in 1995, so it is 30 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 33,700 vehicles a day, roughly 13% of them trucks, projected to reach 18,297 by 2046. The structure is 269 ft (81.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIl 255 SB
CrossesPoag RD NSRR
Location2.5 MI N of I-270
RouteState Highway 255
CountyMadison County
StateIllinois
Coordinates38.79243, -90.04502
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.5 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHS 20
Structure length269 ft (81.9 m)
Longest span85 ft (25.9 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,700 (2023)
Projected traffic18,297 by 2046
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Il 255 SB over Poag RD NSRR built?

It was built in 1995, making it 30 years old in 2025.

What condition is Il 255 SB over Poag RD NSRR 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 2022.

How much traffic does Il 255 SB over Poag RD NSRR carry?

About 33,700 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is Il 255 SB over Poag RD NSRR?

The structure is 269 ft (81.9 m) long with a longest span of 85 ft (25.9 m) and a deck 43 ft wide.

Who owns Il 255 SB over Poag RD NSRR?

It is owned by the State Highway Agency.