US Bridges

White Rock Road over Piney Run

Good

Carroll County, Maryland · 1.07 Miles S of Md 26 · Structure no. 200000CL0318020

Built
2017
8 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
40 ft
Daily traffic
4,226
2021 count
Owner
County
County Highway Agency

About this bridge

White Rock Road over Piney Run is a concrete culvert carrying White Rock Road over Piney Run in Carroll County, Maryland. It was built in 2017, so it is 8 years old, younger than the Maryland average of 52.6 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 4,226 vehicles a day, roughly 5% of them trucks, projected to reach 6,760 by 2041. The structure is 40 ft (12.2 m) long and 38 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesWhite Rock Road
CrossesPiney Run
Location1.07 Miles S of Md 26
RouteCounty Highway 664
CountyCarroll County
StateMaryland
Coordinates39.40429, -76.99746
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 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 rating68.2 US tons
Inventory rating52.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span12 ft (3.7 m)
Deck width38 ft (11.7 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,226 (2021)
Projected traffic6,760 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 White Rock Road over Piney Run built?

It was built in 2017, making it 8 years old in 2025.

What condition is White Rock Road over Piney Run 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 2023.

How much traffic does White Rock Road over Piney Run carry?

About 4,226 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is White Rock Road over Piney Run?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.7 m) and a deck 38 ft wide.

Who owns White Rock Road over Piney Run?

It is owned by the County Highway Agency.