US Bridges

Ill 351/FAP619 over Il River

Fair

LaSalle County, Illinois · 1.0 Mi. S of US 6 · Structure no. 050023700000000

Built
2003
22 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,774 ft
8 main spans
Daily traffic
5,250
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 351/FAP619 over Il River is a steel continuous stringer/multi-beam or girder carrying Ill 351/FAP619 over Il River in LaSalle County, Illinois. It was built in 2003, so it is 22 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 5,250 vehicles a day, roughly 3% of them trucks, projected to reach 4,798 by 2046. The structure is 1,774 ft (540.7 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIll 351/FAP619
CrossesIl River
Location1.0 Mi. S of US 6
RouteState Highway 351
CountyLaSalle County
StateIllinois
Coordinates41.31237, -89.08897
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length1,774 ft (540.7 m)
Longest span371 ft (113 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,250 (2023)
Projected traffic4,798 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Ill 351/FAP619 over Il River built?

It was built in 2003, making it 22 years old in 2025.

What condition is Ill 351/FAP619 over Il River 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 August 2023.

How much traffic does Ill 351/FAP619 over Il River carry?

About 5,250 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Ill 351/FAP619 over Il River?

The structure is 1,774 ft (540.7 m) long with a longest span of 371 ft (113 m) and a deck 43 ft wide.

Who owns Ill 351/FAP619 over Il River?

It is owned by the State Highway Agency.