US Bridges

Boyce Mill Road over Gravelly Branch

FairPosted for load

Caroline County, Maryland · 1.8 MI N of Md RTE 314 · Structure no. 200000CO0013010

Built
1919
106 years old
Condition
Fair
inspected December 2023
Type
Arch - Deck
Concrete
Length
41 ft
1 main span
Daily traffic
2,025
2022 count
Owner
County
County Highway Agency

About this bridge

Boyce Mill Road over Gravelly Branch is a concrete arch - deck carrying Boyce Mill Road over Gravelly Branch in Caroline County, Maryland. It was built in 1919, so it is 106 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 2,025 vehicles a day, roughly 1% of them trucks, projected to reach 2,727 by 2042. The structure is 41 ft (12.5 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesBoyce Mill Road
CrossesGravelly Branch
Location1.8 MI N of Md RTE 314
RouteCounty Highway 47
CountyCaroline County
StateMaryland
Coordinates38.99054, -75.7637
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25 US tons
Inventory rating25 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span41 ft (12.5 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,025 (2022)
Projected traffic2,727 by 2042
Trucks1%
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 statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$28,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Boyce Mill Road over Gravelly Branch built?

It was built in 1919, making it 106 years old in 2025.

What condition is Boyce Mill Road over Gravelly Branch 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 December 2023.

How much traffic does Boyce Mill Road over Gravelly Branch carry?

About 2,025 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Boyce Mill Road over Gravelly Branch?

The structure is 41 ft (12.5 m) long with a longest span of 41 ft (12.5 m) and a deck 23 ft wide.

Who owns Boyce Mill Road over Gravelly Branch?

It is owned by the County Highway Agency.