US Bridges

Hammonds Ferry RD over Patapsco River

Fair

Anne Arundel County, Maryland · On Aa Co/ Balto CO Line · Structure no. 100000020077010

Built
1961
64 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
303 ft
5 main spans
Daily traffic
8,800
2006 count
Owner
State
State Highway Agency

About this bridge

Hammonds Ferry RD over Patapsco River is a steel stringer/multi-beam or girder carrying Hammonds Ferry RD over Patapsco River in Anne Arundel County, Maryland. It was built in 1961, so it is 64 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 8,800 vehicles a day, roughly 5% of them trucks, projected to reach 10,146 by 2026. The structure is 303 ft (92.4 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHammonds Ferry RD
CrossesPatapsco River
LocationOn Aa Co/ Balto CO Line
RouteCounty Highway 17
CountyAnne Arundel County
StateMaryland
Coordinates39.23025, -76.6647
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 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
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length303 ft (92.4 m)
Longest span60 ft (18.3 m)
Deck width39 ft (11.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,800 (2006)
Projected traffic10,146 by 2026
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$778,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hammonds Ferry RD over Patapsco River built?

It was built in 1961, making it 64 years old in 2025.

What condition is Hammonds Ferry RD over Patapsco 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 May 2024.

How much traffic does Hammonds Ferry RD over Patapsco River carry?

About 8,800 vehicles per day (2006 count), of which roughly 5% are trucks.

How long is Hammonds Ferry RD over Patapsco River?

The structure is 303 ft (92.4 m) long with a longest span of 60 ft (18.3 m) and a deck 39 ft wide.

Who owns Hammonds Ferry RD over Patapsco River?

It is owned by the State Highway Agency.