US Bridges

Allendale Road over Br Nippersink CR

Good

McHenry County, Illinois · 1.5 E Il 47 · Structure no. 056317300000000

Built
2009
16 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
93 ft
1 main span
Daily traffic
750
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Allendale Road over Br Nippersink CR is a prestressed concrete stringer/multi-beam or girder carrying Allendale Road over Br Nippersink CR in McHenry 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 750 vehicles a day, roughly 9% of them trucks, projected to reach 900 by 2046. The structure is 93 ft (28.4 m) long and 42 ft wide.

CarriesAllendale Road
CrossesBr Nippersink CR
Location1.5 E Il 47
RouteCounty Highway 0
Coordinates42.39965, -88.40861
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating38.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length93 ft (28.4 m)
Longest span91 ft (27.6 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2021)
Projected traffic900 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Allendale Road over Br Nippersink CR built?

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

What condition is Allendale Road over Br Nippersink CR 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 October 2024.

How much traffic does Allendale Road over Br Nippersink CR carry?

About 750 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Allendale Road over Br Nippersink CR?

The structure is 93 ft (28.4 m) long with a longest span of 91 ft (27.6 m) and a deck 42 ft wide.

Who owns Allendale Road over Br Nippersink CR?

It is owned by the Town or Township Highway Agency.