US Bridges

I 255 NB Ramp D over 255 SB->IL3 SB Rmp B

Fair

Monroe County, Illinois · North of Columbia · Structure no. 067002600000000

Built
1982
43 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
153 ft
1 main span
Daily traffic
25,850
2023 count
Owner
State
State Highway Agency

About this bridge

I 255 NB Ramp D over 255 SB->IL3 SB Rmp B is a steel stringer/multi-beam or girder carrying I 255 NB Ramp D over 255 SB->IL3 SB Rmp B in Monroe 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 5 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 25,850 vehicles a day, roughly 10% of them trucks, projected to reach 31,866 by 2046. The structure is 153 ft (46.6 m) long and 59 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI 255 NB Ramp D
Crosses255 SB->IL3 SB Rmp B
LocationNorth of Columbia
RouteInterstate 255
CountyMonroe County
StateIllinois
Coordinates38.47483, -90.22636
Functional classUrban Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.2 US tons
Inventory rating51.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length153 ft (46.6 m)
Longest span152 ft (46.3 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,850 (2023)
Projected traffic31,866 by 2046
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 255 NB Ramp D over 255 SB->IL3 SB Rmp B built?

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

What condition is I 255 NB Ramp D over 255 SB->IL3 SB Rmp B 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 January 2025.

How much traffic does I 255 NB Ramp D over 255 SB->IL3 SB Rmp B carry?

About 25,850 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is I 255 NB Ramp D over 255 SB->IL3 SB Rmp B?

The structure is 153 ft (46.6 m) long with a longest span of 152 ft (46.3 m) and a deck 59 ft wide.

Who owns I 255 NB Ramp D over 255 SB->IL3 SB Rmp B?

It is owned by the State Highway Agency.