US Bridges

Grave Run Road over Gunpowder Falls

Fair

Carroll County, Maryland · 0.14 MI N of Roller Road · Structure no. 200000CL0406020

Built
1970
55 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
36 ft
Daily traffic
660
2021 count
Owner
County
County Highway Agency

About this bridge

Grave Run Road over Gunpowder Falls is a concrete culvert carrying Grave Run Road over Gunpowder Falls in Carroll County, Maryland. It was built in 1970, so it is 55 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 660 vehicles a day, roughly 8% of them trucks, projected to reach 1,090 by 2041. The structure is 36 ft (11 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesGrave Run Road
CrossesGunpowder Falls
Location0.14 MI N of Roller Road
RouteCounty Highway 199
CountyCarroll County
StateMaryland
Coordinates39.69605, -76.80645
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans0
Design loadUnknown
Structure length36 ft (11 m)
Longest span11 ft (3.4 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic660 (2021)
Projected traffic1,090 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Grave Run Road over Gunpowder Falls built?

It was built in 1970, making it 55 years old in 2025.

What condition is Grave Run Road over Gunpowder Falls in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does Grave Run Road over Gunpowder Falls carry?

About 660 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Grave Run Road over Gunpowder Falls?

The structure is 36 ft (11 m) long with a longest span of 11 ft (3.4 m) and a deck 29 ft wide.

Who owns Grave Run Road over Gunpowder Falls?

It is owned by the County Highway Agency.