US Bridges

FAS 254 Ch 5 over I-39/US 51

Fair

LaSalle County, Illinois · 4.0 MI N of Il 18 · Structure no. 050020800000000

Built
1988
37 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
228 ft
3 main spans
Daily traffic
350
2020 count
Owner
State
State Highway Agency

About this bridge

FAS 254 Ch 5 over I-39/US 51 is a steel continuous stringer/multi-beam or girder carrying FAS 254 Ch 5 over I-39/US 51 in LaSalle County, Illinois. It was built in 1988, so it is 37 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 350 vehicles a day, roughly 17% of them trucks, projected to reach 354 by 2046. The structure is 228 ft (69.6 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFAS 254 Ch 5
CrossesI-39/US 51
Location4.0 MI N of Il 18
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.17729, -89.07554
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.2 US tons
Inventory rating52.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length228 ft (69.6 m)
Longest span165 ft (50.4 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2020)
Projected traffic354 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 FAS 254 Ch 5 over I-39/US 51 built?

It was built in 1988, making it 37 years old in 2025.

What condition is FAS 254 Ch 5 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 254 Ch 5 over I-39/US 51 carry?

About 350 vehicles per day (2020 count), of which roughly 17% are trucks.

How long is FAS 254 Ch 5 over I-39/US 51?

The structure is 228 ft (69.6 m) long with a longest span of 165 ft (50.4 m) and a deck 37 ft wide.

Who owns FAS 254 Ch 5 over I-39/US 51?

It is owned by the State Highway Agency.