US Bridges

Il 47 FAP 326 over Drainage Ditch

Good

Grundy County, Illinois · 0.95 MI S of Il 113 · Structure no. 032200900000000

Built
2009
16 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
41 ft
3 main spans
Daily traffic
7,100
2023 count
Owner
State
State Highway Agency

About this bridge

Il 47 FAP 326 over Drainage Ditch is a concrete culvert carrying Il 47 FAP 326 over Drainage Ditch in Grundy County, Illinois. It was built in 2009, so it is 16 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,100 vehicles a day, roughly 14% of them trucks, projected to reach 9,360 by 2046. The structure is 41 ft (12.5 m) long and 51 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIl 47 FAP 326
CrossesDrainage Ditch
Location0.95 MI S of Il 113
RouteState Highway 47
CountyGrundy County
StateIllinois
Coordinates41.27047, -88.41994
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.7 US tons
Inventory rating41.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span13 ft (4.1 m)
Deck width51 ft (15.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,100 (2023)
Projected traffic9,360 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Il 47 FAP 326 over Drainage Ditch built?

It was built in 2009, making it 16 years old in 2025.

What condition is Il 47 FAP 326 over Drainage Ditch 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 February 2023.

How much traffic does Il 47 FAP 326 over Drainage Ditch carry?

About 7,100 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Il 47 FAP 326 over Drainage Ditch?

The structure is 41 ft (12.5 m) long with a longest span of 13 ft (4.1 m) and a deck 51 ft wide.

Who owns Il 47 FAP 326 over Drainage Ditch?

It is owned by the State Highway Agency.