Bridges of Boston Harbor

Chelsea Street

Bascule Span Vertical Clearance: 9 feet closed Horizontal Clearance: 93 feet
  Vertical Clearance: 83 feet open Water Depth: 32 ft mid-channel up to bridge
Looking Upstream, Lowered
Looking UpStream, Raised
Looking UpStream, Going Down

 

Andrew P. McCardle Bridge

Bascule Span Clearance: 21 feet Horizontal Clearance: 175 feet
    Water Depth: 32 feet
Bridge Open, Inbound
Bridge Closed, Outbound
   

 

Mystic River - Tobin Memorial Bridge

Fixed Span Vertical Clearance: 135 feet Over 600 foot channel
    Water Depth: 35 feet
Tobin Bridge from mouth of the Chelsea Creek
Tobin Bridge, looking through the McCardle Bridge
   

 

Alford Street - Rt 99 (Malden Bridges)

Bascule Span Vertical Clearance: 12 feet closed Horizontal Clearance: 75 feet
    Water Depth: 19 feet
Bridge Open, Inbound

 

Northern Avenue Bridge

Swing Bridge Vertical Clearance: 7 feet closed Horizontal Clearance: 75 feet
    Water Depth: 11 feet
The New Northern Avenue Bridge is a fixed span, just above the Northern Ave swing bridge. It has a vertical clearance of 16 feet. The Congress Street Bridge above the new Northern Ave Bridge is fixed with 6 feet of clearance. The fourth bridge on the Fort Point Channel is the Summer Street Bridge with a vertical clearance of 8 feet.
Northern Ave Bridge closed

Northern Ave Bridge Open,

South Boston side (East Draw) is the navigable channel

   

 

Neponset River Bridges

Fixed Bridge - Auto Vertical Clearance: 30 feet Horizontal Clearance: 80 feet
2nd bridge from sea   Water Depth: 19 feet
Fixed Bridge - Train Vertical Clearance: 30 feet Horizontal Clearance: 109 feet
1st bridge from sea   Water Depth: 19 feet

 

Fore River Bridge, Quincy

Lift Bridge Vertical Clearance: 55 feet closed Horizontal Clearance: 175 feet
  Vertical Clearance: 175 feet open Water Depth:
Heading Up River, Both Bridges Up
Heading Up River, Both Bridges Down

Heading Out ToSea, Both Bridges Down

Departing Fore River Staging Area, Quincy

 

 

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