US Bridges

Mason Road over Rocky Gap Run

Good

Allegany County, Maryland · 0.23 MI S of Rocky Gap RD · Structure no. 200000A-0094010

Built
2017
8 years old
Condition
Good
inspected November 2023
Type
Slab
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
205
2019 count
Owner
County
County Highway Agency

About this bridge

Mason Road over Rocky Gap Run is a prestressed concrete slab carrying Mason Road over Rocky Gap Run in Allegany 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 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 205 vehicles a day, roughly 5% of them trucks, projected to reach 255 by 2039. The structure is 33 ft (10.2 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMason Road
CrossesRocky Gap Run
Location0.23 MI S of Rocky Gap RD
RouteCounty Highway 454
CountyAllegany County
StateMaryland
Coordinates39.70578, -78.69706
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 protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating93.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length33 ft (10.2 m)
Longest span29 ft (8.8 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic205 (2019)
Projected traffic255 by 2039
Trucks5%
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 Mason Road over Rocky Gap Run built?

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

What condition is Mason Road over Rocky Gap 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 November 2023.

How much traffic does Mason Road over Rocky Gap Run carry?

About 205 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Mason Road over Rocky Gap Run?

The structure is 33 ft (10.2 m) long with a longest span of 29 ft (8.8 m) and a deck 25 ft wide.

Who owns Mason Road over Rocky Gap Run?

It is owned by the County Highway Agency.