US Bridges

Mason Branch Road over Mason Branch

Good

Caroline County, Maryland · On Queen Annes CO Line · Structure no. 200000CO0005010

Built
1910
115 years old, rebuilt 2010
Condition
Good
inspected January 2024
Type
Slab
Prestressed Concrete
Length
96 ft
2 main spans
Daily traffic
1,329
2024 count
Owner
County
County Highway Agency

About this bridge

Mason Branch Road over Mason Branch is a prestressed concrete slab carrying Mason Branch Road over Mason Branch in Caroline County, Maryland. It was built in 1910 and reconstructed in 2010, so it is 115 years old, older 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 1,329 vehicles a day, roughly 1% of them trucks, projected to reach 1,621 by 2044. The structure is 96 ft (29.3 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMason Branch Road
CrossesMason Branch
LocationOn Queen Annes CO Line
RouteCounty Highway 71
CountyCaroline County
StateMaryland
Coordinates39.00466, -75.9109
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.5 US tons
Inventory rating53 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length96 ft (29.3 m)
Longest span55 ft (16.8 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,329 (2024)
Projected traffic1,621 by 2044
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 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 Branch Road over Mason Branch built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 2010.

What condition is Mason Branch Road over Mason Branch 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 January 2024.

How much traffic does Mason Branch Road over Mason Branch carry?

About 1,329 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Mason Branch Road over Mason Branch?

The structure is 96 ft (29.3 m) long with a longest span of 55 ft (16.8 m) and a deck 33 ft wide.

Who owns Mason Branch Road over Mason Branch?

It is owned by the County Highway Agency.