US Bridges

FAS 259 over Fox River

Good

LaSalle County, Illinois · E2603 N4125 · Structure no. 050356200000000

Built
2008
17 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
554 ft
4 main spans
Daily traffic
1,750
2020 count
Owner
County
County Highway Agency

About this bridge

FAS 259 over Fox River is a steel continuous stringer/multi-beam or girder carrying FAS 259 over Fox River in LaSalle County, Illinois. It was built in 2008, so it is 17 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,750 vehicles a day, roughly 11% of them trucks, projected to reach 1,768 by 2046. The structure is 554 ft (168.9 m) long and 43 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesFAS 259
CrossesFox River
LocationE2603 N4125
RouteCounty Highway 0
CountyLaSalle County
StateIllinois
Coordinates41.54036, -88.68473
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+3 approach)
Design loadHS 20
Structure length554 ft (168.9 m)
Longest span110 ft (33.5 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (2020)
Projected traffic1,768 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 259 over Fox River built?

It was built in 2008, making it 17 years old in 2025.

What condition is FAS 259 over Fox River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does FAS 259 over Fox River carry?

About 1,750 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is FAS 259 over Fox River?

The structure is 554 ft (168.9 m) long with a longest span of 110 ft (33.5 m) and a deck 43 ft wide.

Who owns FAS 259 over Fox River?

It is owned by the County Highway Agency.