US Bridges

Graf Road over Piscasaw Creek

PoorClosed to traffic

McHenry County, Illinois · 0.4 MI E of Maxon RD · Structure no. 056316300000000

Built
1998
27 years old
Condition
Poor
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
95 ft
3 main spans
Daily traffic
375
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Graf Road over Piscasaw Creek is a prestressed concrete box beam or girders - multiple carrying Graf Road over Piscasaw Creek in McHenry County, Illinois. It was built in 1998, so it is 27 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 375 vehicles a day, roughly 9% of them trucks, projected to reach 450 by 2046. The structure is 95 ft (29 m) long and 30 ft wide.

CarriesGraf Road
CrossesPiscasaw Creek
Location0.4 MI E of Maxon RD
RouteCounty Highway 0
Coordinates42.44406, -88.66052
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length95 ft (29 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2021)
Projected traffic450 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 Graf Road over Piscasaw Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Graf Road over Piscasaw Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Graf Road over Piscasaw Creek carry?

About 375 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Graf Road over Piscasaw Creek?

The structure is 95 ft (29 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns Graf Road over Piscasaw Creek?

It is owned by the Town or Township Highway Agency.