US Bridges

Greenmount Church over Murphy Run

Good

Carroll County, Maryland · 0.3 Miles East of Md 30 · Structure no. 200000CL0385010

Built
2010
15 years old
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
705
2021 count
Owner
County
County Highway Agency

About this bridge

Greenmount Church over Murphy Run is a prestressed concrete slab carrying Greenmount Church over Murphy Run in Carroll County, Maryland. It was built in 2010, so it is 15 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 705 vehicles a day, roughly 7% of them trucks, projected to reach 1,160 by 2041. The structure is 36 ft (11 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesGreenmount Church
CrossesMurphy Run
Location0.3 Miles East of Md 30
RouteCounty Highway 158
CountyCarroll County
StateMaryland
Coordinates39.62876, -76.85303
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79.5 US tons
Inventory rating47.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length36 ft (11 m)
Longest span33 ft (10.1 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic705 (2021)
Projected traffic1,160 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Greenmount Church over Murphy Run built?

It was built in 2010, making it 15 years old in 2025.

What condition is Greenmount Church over Murphy 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 September 2023.

How much traffic does Greenmount Church over Murphy Run carry?

About 705 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Greenmount Church over Murphy Run?

The structure is 36 ft (11 m) long with a longest span of 33 ft (10.1 m) and a deck 29 ft wide.

Who owns Greenmount Church over Murphy Run?

It is owned by the County Highway Agency.