US Bridges

Il 47 FAP 326 over Il Riv.& I & M Canal

Fair

Grundy County, Illinois · APPR.1.23MI S /Us 6 · Structure no. 032009900000000

Built
2003
22 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,730 ft
5 main spans
Daily traffic
18,100
2023 count
Owner
State
State Highway Agency

About this bridge

Il 47 FAP 326 over Il Riv.& I & M Canal is a steel continuous stringer/multi-beam or girder carrying Il 47 FAP 326 over Il Riv.& I & M Canal in Grundy 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 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 18,100 vehicles a day, roughly 9% of them trucks, projected to reach 22,560 by 2046. The structure is 1,730 ft (527.3 m) long and 76 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesIl 47 FAP 326
CrossesIl Riv.& I & M Canal
LocationAPPR.1.23MI S /Us 6
RouteState Highway 47
CountyGrundy County
StateIllinois
Coordinates41.35574, -88.42155
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length1,730 ft (527.3 m)
Longest span404 ft (123 m)
Deck width76 ft (23.3 m)
Roadway width61 ft (18.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,100 (2023)
Projected traffic22,560 by 2046
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemYes

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 Il 47 FAP 326 over Il Riv.& I & M Canal built?

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

What condition is Il 47 FAP 326 over Il Riv.& I & M Canal 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 October 2024.

How much traffic does Il 47 FAP 326 over Il Riv.& I & M Canal carry?

About 18,100 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Il 47 FAP 326 over Il Riv.& I & M Canal?

The structure is 1,730 ft (527.3 m) long with a longest span of 404 ft (123 m) and a deck 76 ft wide.

Who owns Il 47 FAP 326 over Il Riv.& I & M Canal?

It is owned by the State Highway Agency.