US Bridges

Mink Hollow Road over Patuxent River

Fair

Howard County, Maryland · Howard-Montgomery CO Line · Structure no. 200000HO0027010

Built
1908
117 years old, rebuilt 1983
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
76 ft
1 main span
Daily traffic
1,209
1993 count
Owner
County
County Highway Agency

About this bridge

Mink Hollow Road over Patuxent River is a steel stringer/multi-beam or girder carrying Mink Hollow Road over Patuxent River in Howard County, Maryland. It was built in 1908 and reconstructed in 1983, so it is 117 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 1,209 vehicles a day, roughly 4% of them trucks, projected to reach 2,520 by 2015. The structure is 76 ft (23.2 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMink Hollow Road
CrossesPatuxent River
LocationHoward-Montgomery CO Line
RouteCounty Highway 58
CountyHoward County
StateMaryland
Coordinates39.16727, -76.99818
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.9 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span75 ft (22.9 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,209 (1993)
Projected traffic2,520 by 2015
Trucks4%
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 Mink Hollow Road over Patuxent River built?

It was built in 1908, making it 117 years old in 2025. It was reconstructed in 1983.

What condition is Mink Hollow Road over 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 2023.

How much traffic does Mink Hollow Road over Patuxent River carry?

About 1,209 vehicles per day (1993 count), of which roughly 4% are trucks.

How long is Mink Hollow Road over Patuxent River?

The structure is 76 ft (23.2 m) long with a longest span of 75 ft (22.9 m) and a deck 28 ft wide.

Who owns Mink Hollow Road over Patuxent River?

It is owned by the County Highway Agency.