|This article relies largely or entirely on a single source. (December 2013)|
Cape Cod Canal - Sagamore Bridge
|Crosses||Cape Cod Canal|
|Maintained by||U.S. Army Corps of Engineers|
|Design||Arch bridge with suspended deck|
|Total length||1,408 ft (429 m)|
|Width||40 ft (12 m)|
|Longest span||616 ft (188 m)|
|Clearance below||135 ft (41 m)|
|Opened||June 22, 1935|
The Sagamore Bridge in Sagamore, Massachusetts carries U.S. Route 6 (US 6) across the Cape Cod Canal, connecting Cape Cod with the mainland of Massachusetts. It is the more northeastern of two automobile canal crossings, the other being the Bourne Bridge.
Most traffic approaching from the north follows Massachusetts Route 3 (Route 3), which ends at US 6, just north of the bridge, and the bridge provides direct expressway connections from Boston and Interstate 93 (I-93).
There is a six-foot wide sidewalk for pedestrian and bicycle access on the east side of the bridge. The sidewalk is slightly raised, but there is no fence or barrier between the sidewalk and car traffic. Cyclists are recommended to walk their bicycle. Although the bridge road is plowed in winter, the sidewalk is sometimes unplowed and unpassable.
During relatively high winds of 70 miles per hour (110 km/h) or above, due to bad weather, bridges to the Cape are sometimes closed for safety.
The bridge, along with its sibling, the Bourne Bridge, was constructed beginning in 1933 by the Public Works Administration for the U.S. Army Corps of Engineers, which operates both the bridges and the canal. Both bridges carry four lanes of traffic over a 616 feet (188 m) main span, with a 135 feet (41 m) ship clearance. They opened to traffic on June 22, 1935. The design of the Sagamore and Bourne bridges was later copied in miniature for the John Greenleaf Whittier Bridge that connects I-95 from Newburyport to Amesbury.
The new bridges replaced an earlier bridge, completed in 1912, which was built as a drawbridge before the canal was widened (and indeed before the canal opened in 1914, for obvious logistical reasons). The original bridge approaches are still visible to the north of the modern bridge,[where?] though both approaches are in low-traffic residential areas.
In 2004, construction began to replace the rotary that connects US 6 and Route 3 to the bridge with a trumpet interchange (known as the "Sagamore Flyover"). This project had been delayed for many years because of a controversy about the disruption of homes and businesses in the area. The project finally commenced because of the severe gridlock at the traffic circle, which was built to accommodate a much smaller amount of traffic. It was the site of many traffic accidents over the years. The flyover was completed in late 2006.
The Army Corps of Engineers started a project in Fall 2009 that replaced the bridge deck and the sidewalk along with the lighting. The project was completed ahead of schedule in May 2010.
In March 2013 work once again began on the bridge to replace the existing paint, which included lead-based primer, with a new high-performance lead-free paint system, at a cost of $12,390,000.
- "Sagamore And Bourne Bridge Statistics". The Enterprise. 30 January 2015. Retrieved 9 September 2017.
- Sullivan, John (20 September 2015). "Coffeeneuring the Cape Cod Canal. Both Sides End to End and Crossing Both Bridges". A Midnight Rider. Retrieved 9 September 2017.
- Burke, Kevin (19 January 2017). "Army Corps: No Snow Clearing From Bridge Sidewalks". The Bourne Enterprise. Retrieved 9 September 2017.
- Bourne, Sagamore bridges may close if Hurricane Sandy brings sustained winds of 70 mph