US Bridges

Mount Zion Road over Piney Run

Good

Baltimore County, Maryland · 1.4 MI W of Md 88 · Structure no. 200000B-0065010

Built
2011
14 years old
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
221
2023 count
Owner
County
County Highway Agency

About this bridge

Mount Zion Road over Piney Run is a prestressed concrete slab carrying Mount Zion Road over Piney Run in Baltimore County, Maryland. It was built in 2011, so it is 14 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 221 vehicles a day, roughly 5% of them trucks, projected to reach 270 by 2043. The structure is 51 ft (15.5 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesMount Zion Road
CrossesPiney Run
Location1.4 MI W of Md 88
RouteCounty Highway 158
CountyBaltimore County
StateMaryland
Coordinates39.55684, -76.79437
Functional classRural 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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating89 US tons
Inventory rating53.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length51 ft (15.5 m)
Longest span47 ft (14.3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic221 (2023)
Projected traffic270 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Mount Zion Road over Piney Run built?

It was built in 2011, making it 14 years old in 2025.

What condition is Mount Zion 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 Mount Zion Road over Piney Run carry?

About 221 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Mount Zion Road over Piney Run?

The structure is 51 ft (15.5 m) long with a longest span of 47 ft (14.3 m) and a deck 26 ft wide.

Who owns Mount Zion Road over Piney Run?

It is owned by the County Highway Agency.