US Bridges

Ferry Dock RD over Mackerel Cove

Fair

Hancock County, Maine · Swans Island Ferry Slip · Structure no. 6349

Built
1997
28 years old, rebuilt 2014
Condition
Fair
inspected June 2024
Type
Movable - Lift
Steel
Length
84 ft
1 main span
Daily traffic
—
Owner
State
State Highway Agency

About this bridge

Ferry Dock RD over Mackerel Cove is a steel movable - lift carrying Ferry Dock RD over Mackerel Cove in Hancock County, Maine. It was built in 1997 and reconstructed in 2014, so it is 28 years old, younger than the Maine average of 53.7 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.

No traffic count is recorded. The structure is 84 ft (25.6 m) long and 12 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesFerry Dock RD
CrossesMackerel Cove
LocationSwans Island Ferry Slip
RouteCounty Highway 0
CountyHancock County
StateMaine
Coordinates44.18125, -68.42365
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating42.5 US tons

Structure

Structure typeMovable - Lift
MaterialSteel
DeckOpen grating
Main spans1
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span55 ft (16.8 m)
Deck width12 ft (3.8 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deck15 ft (4.4 m)

Traffic and service

Average daily traffic—
Projected traffic—
Trucks5%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ferry Dock RD over Mackerel Cove built?

It was built in 1997, making it 28 years old in 2025. It was reconstructed in 2014.

What condition is Ferry Dock RD over Mackerel Cove 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 June 2024.

How much traffic does Ferry Dock RD over Mackerel Cove carry?

No traffic count is recorded for this structure.

How long is Ferry Dock RD over Mackerel Cove?

The structure is 84 ft (25.6 m) long with a longest span of 55 ft (16.8 m) and a deck 12 ft wide.

Who owns Ferry Dock RD over Mackerel Cove?

It is owned by the State Highway Agency.