US Bridges

Folly Quarter Road over Tributary to Middle Patu

Fair

Howard County, Maryland · 1.2 MI S of Md RTE 144 · Structure no. 200000HO0114030

Built
1970
55 years old
Condition
Fair
inspected April 2024
Type
Culvert
Steel
Length
22 ft
3 main spans
Daily traffic
4,417
2024 count
Owner
County
County Highway Agency

About this bridge

Folly Quarter Road over Tributary to Middle Patu is a steel culvert carrying Folly Quarter Road over Tributary to Middle Patu in Howard 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 5 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 4,417 vehicles a day, roughly 4% of them trucks, projected to reach 5,390 by 2044. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFolly Quarter Road
CrossesTributary to Middle Patu
Location1.2 MI S of Md RTE 144
RouteCounty Highway 79
CountyHoward County
StateMaryland
Coordinates39.27117, -76.91225
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating110.1 US tons
Inventory rating66.5 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length22 ft (6.6 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic4,417 (2024)
Projected traffic5,390 by 2044
Trucks4%
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 Folly Quarter Road over Tributary to Middle Patu built?

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

What condition is Folly Quarter Road over Tributary to Middle Patu 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 Road over Tributary to Middle Patu carry?

About 4,417 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Folly Quarter Road over Tributary to Middle Patu?

The structure is 22 ft (6.6 m) long with a longest span of 6 ft (1.8 m).

Who owns Folly Quarter Road over Tributary to Middle Patu?

It is owned by the County Highway Agency.