US Bridges

Pierce Ave over NW Drainageway

Good

Winnebago County, Illinois · 0.05 MI E of Rockton · Structure no. 101600600000000

Built
1962
63 years old, rebuilt 2012
Condition
Good
inspected July 2021
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
350
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pierce Ave over NW Drainageway is a concrete slab carrying Pierce Ave over NW Drainageway in Winnebago County, Illinois. It was built in 1962 and reconstructed in 2012, so it is 63 years old, older 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 350 vehicles a day, roughly 6% of them trucks, projected to reach 657 by 2046. The structure is 32 ft (9.9 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesPierce Ave
CrossesNW Drainageway
Location0.05 MI E of Rockton
CountyWinnebago County
StateIllinois
Coordinates42.30659, -89.09584
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.9 US tons
Inventory rating47.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.9 m)
Longest span31 ft (9.3 m)
Deck width42 ft (12.9 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2022)
Projected traffic657 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Pierce Ave over NW Drainageway built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2012.

What condition is Pierce Ave over NW Drainageway 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 2021.

How much traffic does Pierce Ave over NW Drainageway carry?

About 350 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Pierce Ave over NW Drainageway?

The structure is 32 ft (9.9 m) long with a longest span of 31 ft (9.3 m) and a deck 42 ft wide.

Who owns Pierce Ave over NW Drainageway?

It is owned by the City or Municipal Highway Agency.