US Bridges

FAS 359 Roanoke RD over I-39/US 51

Fair

Woodford County, Illinois · 3.5 MI N of US24 · Structure no. 102005400000000

Built
1990
35 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
232 ft
3 main spans
Daily traffic
400
2020 count
Owner
State
State Highway Agency

About this bridge

FAS 359 Roanoke RD over I-39/US 51 is a steel continuous stringer/multi-beam or girder carrying FAS 359 Roanoke RD over I-39/US 51 in Woodford County, Illinois. It was built in 1990, so it is 35 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 400 vehicles a day, roughly 23% of them trucks, projected to reach 404 by 2046. The structure is 232 ft (70.7 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFAS 359 Roanoke RD
CrossesI-39/US 51
Location3.5 MI N of US24
RouteCounty Highway 0
CountyWoodford County
StateIllinois
Coordinates40.78765, -89.03565
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
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 geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.3 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span165 ft (50.3 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2020)
Projected traffic404 by 2046
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 FAS 359 Roanoke RD over I-39/US 51 built?

It was built in 1990, making it 35 years old in 2025.

What condition is FAS 359 Roanoke RD over I-39/US 51 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 March 2023.

How much traffic does FAS 359 Roanoke RD over I-39/US 51 carry?

About 400 vehicles per day (2020 count), of which roughly 23% are trucks.

How long is FAS 359 Roanoke RD over I-39/US 51?

The structure is 232 ft (70.7 m) long with a longest span of 165 ft (50.3 m) and a deck 37 ft wide.

Who owns FAS 359 Roanoke RD over I-39/US 51?

It is owned by the State Highway Agency.