Sunday, September 29, 2024

1917+2002 Tomlinson and 1958+2015 I-95 Q Bridges over Quinnipiac River in New Haven, CT

2927 Tomlinson: (Archived Bridge Hunter; no Historic Bridges; HAER)
2002 Tomlinson: (Archived Bridge Hunter; no Historic Bridges; Satellite, 76 photos)
Q: (no Archived Bridge Hunter; Satellite, 227 photos) The formal name is Pearl Harbor Memorial Bridge

Street View, Aug 2022
This lift bridge carries the Providence & Worcester Railroad as well as four lanes of traffic for US-1. 

Street View, Aug 2022

Street View, Oct 2016

This 2010 photo captured the previous i_95 Bridge.
Emporostheoros via Wikipedia
 
Gregory Grice posted
"CT-1 Crosses the Tomlinson Bridge"
On the afternoon of August 4th, 2024, Providence & Worcester's "CT-1", led by a trio of GEs, crosses the Tomlinson Bridge on the Belle Dock Branch in New Haven, Connecticut. Photo Link: https://flic.kr/p/2qh9Vu7

It took over a half-decade to lay track along the east side of the river so that the bridge track could be used. 40% of the bridge cost was to make it strong enough to carry rail traffic, and that cost was $40m. [nhregister]

ebay
"The original Tomlinson bascule-type drawbridge, along with central railroad tracks dating to 1917, had to be replaced after a runaway barge smashed into one of the old bridge's piers in 1995." [nhregister

Note in these photos that the center part of the span has no cables. It must be a suspended span so this bridge is also a cantilever bridge.
CDOT photo via asbi-assoc
"With a span of 515 feet [157m], the main span unit of the new Pearl Harbor Memorial Bridge (PHMB) is the first extradosed cable-stayed bridge constructed in the United States, fully utilizing extradosed pre-stressed cable-stayed technology....The new bridge replaces the previous 1958 structure that was designed for 40,000 vehicles per day; adding critical capacity to accommodate the more than 140,000 vehicles per day."
It replaced a 6-lane bridge with 10 lanes and full shoulder widths.

wsp
The bridge opened Sep 19, 2015.

aecom
"The extradosed system is a hybrid design that is a marriage between a concrete cable stressed girder bridge and a cable stayed bridge. Extradosed type bridges have been successfully constructed in Europe and in the Far East, but the new Q-Bridge will be the first extradosed cable stayed bridge built in the U.S."

The 1917 and 1958 bridges
HAER CONN,5-NEWHA,54--4, cropped
4. View north, bridge partially raised - Tomlinson Bridge, Spanning Quinnipiac River at Forbes Street (U.S. Route 1), New Haven, New Haven County, CT
 
It looks like a trunnion bascule bridge rather than a rolling bascule bridge.
HAER CONN,5-NEWHA,54--14
14. View north of 1976 control house and western leaf in closed position 

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