Penobscot Narrows Bridge and Observatory
The Penobscot Narrows Bridge is a 2,120-foot-long (650 m) cable-stayed bridge that carries US 1/SR 3 over the Penobscot River. It connects Verona Island to Prospect, in the U.S. state of Maine. It opened in December 2006, replacing the Waldo–Hancock Bridge, built in 1931.
Penobscot Narrows Bridge | |
|---|---|
The Penobscot Narrows Bridge. Observatory is at top of west tower; access is provided via elevator from west tower base. | |
| Coordinates | 44°33′32″N 68°48′11″W / 44.559°N 68.803°W |
| Carries | 2 lanes of US 1 / SR 3 |
| Crosses | Penobscot River |
| Locale | Prospect – Verona Island, Maine |
| Official name | Penobscot Narrows Bridge and Observatory |
| Maintained by | Maine Department of Transportation |
| Characteristics | |
| Design | Cable-stayed bridge |
| Total length | 2,120 feet (646 m) |
| Height | 447 feet (136 m) |
| Longest span | 1,161 feet (354 m) |
| Clearance below | 135 feet (41 m) |
| History | |
| Opened | December 30, 2006 |
| Location | |
Technical information edit
The Penobscot Narrows Bridge is one of three bridges in the US (the others being the Zakim Bridge in Boston, Massachusetts, and the Veterans' Glass City Skyway in Toledo, Ohio) constructed recently using a cradle system that carries the strands within the stays from bridge deck to bridge deck, as a continuous element, eliminating anchorages in the pylons.[1] Each epoxy-coated steel strand is carried inside the cradle in a one-inch steel tube. Each strand acts independently, allowing for removal, inspection and replacement of individual strands. The cable-stay system was designed with a system that uses pressurized nitrogen gas to defend against corrosion.
In June 2007, six reference strands within three stays were replaced with carbon fiber strands — a first in the United States. Monitoring on the strands will evaluate this material for future use in bridge designs. These engineering innovations helped the bridge appear in the December 2006 edition of Popular Science as one of the 100 best innovations of the year.[2] The total project cost was $85 million.
The bridge was designed as an emergency replacement for the Waldo–Hancock Bridge. Just 42 months elapsed from conception to completion. A unique project delivery method, referred to as "owner facilitated design/build", partnered Maine DOT with FIGG as the designer and Cianbro/Reed & Reed LLC as the contractor. The elevator system in the tower, which is claimed to be the fastest and tallest elevator in Maine,[3] was installed by Stanley Elevator Company, Inc.
Observation tower edit
The Penobscot Bridge site is home to the Penobscot Narrows Observatory, the first bridge observation tower in the United States and the tallest public bridge observatory in the world.[4] it is located in the 420-foot (128 m) west tower, allowing visitors to view the bridge, the nearby Fort Knox State Historic Site, the Penobscot River, and Penobscot Bay.[4]
The Penobscot Narrows Observatory opened to the general public on May 19, 2007. It is open at the same times of the year as Fort Knox (May 1 to October 31).[4]
The elevator has had a series of technical problems, including one on July 1, 2014, when 13 people were temporarily stuck in the observatory due to the elevator doors not opening.[5]
Suicides edit
The bridge has been the site of at least twelve suicides since its opening; more are suspected.[6][7][8][9][10][11][12][13][14] This included the Rev. Robert Carlson, a well-known figure in the Bangor area, who was found in the Penobscot River beneath the bridge on November 13, 2011.[15] Other suicidal people have been talked down from the bridge before they jumped.[16][17][18] Before the bridge opened, MaineDOT was aware of many suicide attempts from the Waldo-Hancock Bridge and discussed possible pedestrian safety measures for the new bridge, but no special fencing or other action was taken.[19]
On February 26, 2014, in the wake of another suicide from the bridge, independent Rep. Joe Brooks of Winterport proposed emergency legislation to the Maine Legislature to require the installation of a suicide barrier on the bridge.[20] This proposal was rejected due to cost, as a barrier was estimated to cost between $500,000 and $1 million, plus additional costs for regular inspections. As an alternative, two solar-powered phones were installed on each end of the bridge in May 2015 which connect users to a suicide hotline. The phones cost $30,000. State officials were aware of instances the phones were not functional, and increased inspections of them to weekly from the previous monthly. They could not determine if the phones were functional when a March 5, 2017 suicide, the first since the phones were installed, occurred. The phones were found to be out of order on June 23, 2017, when an abandoned car on the bridge resulted in a search of the Penobscot River by authorities looking for its driver.[7] The emergency phones on the Penobscot Narrows Bridge were reported out of order following another suicide in 2021.[9][21] They were subsequently replaced.[22] In May 2022, the Maine legislature was reportedly planning to "pull together a study group on suicides by bridge."[23]
Closures edit
The bridge was closed for the first time on December 29, 2013, after ice chunks began falling from the support cables onto the bridge deck. The ice was present from a storm on December 22, but did not fall off until the 29th due to cold weather. Hancock County Sheriff's Deputies began receiving reports of damaged cars that morning and upon inspection recommended to MaineDOT that the bridge be closed. At least five vehicles were damaged and two destroyed by the ice. While MaineDOT estimated that 70% of the ice had fallen by that afternoon, it was feared that reopening the bridge would shake more ice onto the bridge deck. MaineDOT also ruled out sending crews onto the bridge cables to remove the ice as too dangerous,[24] but by the following day they were considering bringing in heavy equipment to knock ice off the cables.[25] The bridge reopened on December 30, 2013, after being closed just one day but closed again January 5, 2014, for at least another day, "in anticipation that the ice would melt as temperatures moderated for the first time in days."[26]
The bridge was briefly closed on December 7, 2017, when a woman armed with a shotgun was seen walking across the bridge from the Prospect side to the Verona Island side and then sat on the deck. After closing the bridge, Maine State Police officers negotiated with the woman by loudspeaker, and she surrendered after approximately 20 minutes.[27]
Gallery edit
- Bridge as seen from the west in 2013
- Bridge with the old Waldo-Hancock Bridge
- Penobscot Bridge, August 2006
- Viewed from Verona Island
- Viewed from north toward the southeast
- Viewed from scenic overlook of the western pylon
- View from Bucksport
- Another view from Bucksport
- Closeup while riding across
- View from Observatory facing roughly northeast
- Bridge from top of west tower
- Bridge illuminated at night
- The Waldo-Hancock Bridge (1931-2006) that the Penobscot Narrows Bridge replaced
References edit
- ^ . Dywidag-systems.com. Archived from the original on March 8, 2012. Retrieved June 12, 2012.
- ^ "PopSci's Best of What's New 2006". Popsci.com. Retrieved June 12, 2012.
- ^ "PNBO FAQs". Retrieved November 3, 2022.
- ^ a b c "Penobscot Narrows Bridge & Observatory & Fort Knox". Retrieved November 3, 2022.
- ^ Gagnon, Dawn (July 1, 2014). "Stuck elevator doors strand 13 people at top of Penobscot Narrows Observatory". Bangor Daily News. Retrieved November 3, 2022.
- ^ Gagnon, Dawn (March 5, 2017). "Body of Penobscot Narrows Bridge jumper found". Bangor Daily News. Retrieved November 3, 2022.
- ^ a b Ricker, Nok-Noi (June 23, 2017). "Most crisis phones on bridge out of order as crews searched river". Bangor Daily News. Retrieved November 3, 2022.
- ^ Andrews, Ethan (August 31, 2018). "Man dies after jumping from Penobscot Narrows Bridge". Republican Journal. Retrieved November 3, 2022.
- ^ a b Genter, Ethan (December 6, 2021). "Crisis phones on Penobscot Narrows bridge were out of order the day a woman jumped". Bangor Daily News. Retrieved November 3, 2022.
- ^ "Suicide suspected on Narrows Bridge". Republican Journal. July 22, 2022. Retrieved November 3, 2022.
- ^ Curtis, Abigail (July 29, 2022). "Boaters find body in Penobscot River". Bangor Daily News. Retrieved August 26, 2022.
- ^ Gonzalez, Fran (May 26, 2022). "A Journal reader asks, why no safety fences on Penobscot bridge?". Waldo County VillageSoup. Retrieved August 26, 2022.
- ^ Zachary, Carolyn (July 22, 2022). "Suicide suspected on Narrows Bridge". Waldo County VillageSoup. Retrieved December 4, 2022.
- ^ Genter, Ethan (December 2, 2022). "Body of missing Presque Isle student found on Sears Island". Bangor Daily News. Retrieved December 4, 2022.
- ^ Neff, Andrew (November 13, 2011). "Rev. Robert Carlson, Greater Bangor leader, found dead in Penobscot River". Bangor Daily News. Retrieved November 3, 2022.
- ^ Osborn, Jennifer (January 19, 2022). "Hancock County Sheriff log week of January 20". The Ellsworth American. Retrieved August 26, 2022.
- ^ Staff, Nick Sambides Jr , BDN (August 9, 2019). "2 fire department members honored for saving woman's life on Maine bridge". WGME. Retrieved August 26, 2022.
{{cite web}}: CS1 maint: multiple names: authors list (link) - ^ "Police calm shotgun-armed woman on Penobscot Narrows Bridge". PenBay Pilot. Retrieved August 26, 2022.
- ^ "25-year-old man dead after jumping off Penobscot Narrows Bridge". Bangor Daily News. April 1, 2013. Retrieved June 11, 2013.
- ^ "Lawmaker proposes installation of suicide-prevention fence on Penobscot Narrows Bridge". Bangor Daily News. February 26, 2014. Retrieved February 26, 2014.
- ^ Osborn, Jennifer. "Hancock County Sheriff's Log Week of Nov. 18". The Ellsworth American. Retrieved December 4, 2022.
- ^ "Penobscot Narrows Bridge has new crisis phones after several were discovered to be malfunctioning". Maine Public. December 7, 2021. Retrieved December 4, 2022.
- ^ Zachary, Carolyn (May 26, 2022). "A Journal reader asks, why no safety fences on Penobscot bridge?". Waldo County VillageSoup. Retrieved December 4, 2022.
- ^ "Penobscot Narrows Bridge closed after ice chunks hit cars". Kennebec Journal. December 29, 2013. Retrieved December 30, 2013.
- ^ "Falling ice chunks keep Penobscot Narrows Bridge closed Monday morning". Bangor Daily News. December 30, 2013. Retrieved December 30, 2013.
- ^ "Penobscot Narrows Bridge closed until at least Monday afternoon". Morning Sentinel. January 5, 2014. Retrieved January 6, 2014.
- ^ Kmack, M. (December 7, 2017). "Armed woman shuts down Penobscot Narrows Bridge". WCSH. Retrieved November 3, 2022.
External links edit
- Official website
- http://fortknox.maineguide.com/