US Bridges

Forrest Hills RD over Drainage

Good

Winnebago County, Illinois · 470 N of Il 173 · Structure no. 101132300000000

Built
2014
11 years old
Condition
Good
inspected July 2022
Type
Culvert
Concrete
Length
43 ft
3 main spans
Daily traffic
10,400
2022 count
Owner
State
State Highway Agency

About this bridge

Forrest Hills RD over Drainage is a concrete culvert carrying Forrest Hills RD over Drainage in Winnebago County, Illinois. It was built in 2014, so it is 11 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 10,400 vehicles a day, roughly 4% of them trucks, projected to reach 10,504 by 2046. The structure is 43 ft (13 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesForrest Hills RD
CrossesDrainage
Location470 N of Il 173
Coordinates42.36609, -89.01445
Functional classUrban Collector

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 25 or greater
Structure length43 ft (13 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,400 (2022)
Projected traffic10,504 by 2046
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Forrest Hills RD over Drainage built?

It was built in 2014, making it 11 years old in 2025.

What condition is Forrest Hills RD over Drainage 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 July 2022.

How much traffic does Forrest Hills RD over Drainage carry?

About 10,400 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Forrest Hills RD over Drainage?

The structure is 43 ft (13 m) long with a longest span of 13 ft (4 m).

Who owns Forrest Hills RD over Drainage?

It is owned by the State Highway Agency.