US Bridges

Folly Quarter RD over Middle Patuxent River

Fair

Howard County, Maryland · 2.7 MI S of Md RTE 144 · Structure no. 200000HO0020010

Built
1922
103 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Concrete
Length
60 ft
1 main span
Daily traffic
6,403
2024 count
Owner
County
County Highway Agency

About this bridge

Folly Quarter RD over Middle Patuxent River is a concrete arch - deck carrying Folly Quarter RD over Middle Patuxent River in Howard County, Maryland. It was built in 1922, so it is 103 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 6,403 vehicles a day, roughly 4% of them trucks, projected to reach 8,624 by 2044. The structure is 60 ft (18.3 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesFolly Quarter RD
CrossesMiddle Patuxent River
Location2.7 MI S of Md RTE 144
RouteCounty Highway 80
CountyHoward County
StateMaryland
Coordinates39.25625, -76.92773
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,403 (2024)
Projected traffic8,624 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Folly Quarter RD over Middle Patuxent River built?

It was built in 1922, making it 103 years old in 2025.

What condition is Folly Quarter RD over Middle Patuxent River 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 April 2024.

How much traffic does Folly Quarter RD over Middle Patuxent River carry?

About 6,403 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Folly Quarter RD over Middle Patuxent River?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 27 ft wide.

Who owns Folly Quarter RD over Middle Patuxent River?

It is owned by the County Highway Agency.