US Bridges

I-55 W FR (palm RD over Illinois Central RR

Fair

Sangamon County, Illinois · .9M N Glenarm Intchg · Structure no. 084051700000000

Built
2011
14 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
314 ft
3 main spans
Daily traffic
1,200
2022 count
Owner
State
State Highway Agency

About this bridge

I-55 W FR (palm RD over Illinois Central RR is a steel continuous stringer/multi-beam or girder carrying I-55 W FR (palm RD over Illinois Central RR in Sangamon County, Illinois. It was built in 2011, so it is 14 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 4% of them trucks, projected to reach 1,212 by 2046. The structure is 314 ft (95.7 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-55 W FR (palm RD
CrossesIllinois Central RR
Location.9M N Glenarm Intchg
CountySangamon County
StateIllinois
Coordinates39.62968, -89.64764
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length314 ft (95.7 m)
Longest span130 ft (39.6 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2022)
Projected traffic1,212 by 2046
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-55 W FR (palm RD over Illinois Central RR built?

It was built in 2011, making it 14 years old in 2025.

What condition is I-55 W FR (palm RD over Illinois Central RR 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 I-55 W FR (palm RD over Illinois Central RR carry?

About 1,200 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is I-55 W FR (palm RD over Illinois Central RR?

The structure is 314 ft (95.7 m) long with a longest span of 130 ft (39.6 m) and a deck 35 ft wide.

Who owns I-55 W FR (palm RD over Illinois Central RR?

It is owned by the State Highway Agency.