The Franklin D. Roosevelt Mid-Hudson Bridge, ceremoniously named after the Governor of New York and the President of the United States, originally opened as a two lane bridge. On March 17, 1933, the newly formed New York State Bridge Authority, NYSBA, acquired the bridge from the New York State Department of Public Works. The east approach to the bridge was widened in 1949. The new approach was constructed to help the flow of rush hour and weekend traffic move more efficiently.
The New York State Legislature authorized a $1.5 million dollar loan to NYSBA in 1965 in order to build a new highway approach and toll plaza on the western side of the bridge.
By the summer of 1983, testing of a new traffic flow system had shown that the normally two-lane roadway needed to be converted to three lanes during rush hour, with two-lanes supporting the heaviest traffic volume. A deck replacement project took place during 1987-1988, replacing the 57 year old roadway with minimal traffic interruptions.
In the summer of 2001, necklace lighting was installed on the bridge. Designed by Baker Engineering, the system uses energy efficient LED fixtures. Each fixture is powered by a patented technology which uses multi-colored LEDs and a microprocessor to create over 16.7 million colors and color changing effects.
A unique plan using the Mid-Hudson Bridge as a musical instrument was realized in 2009 by Joseph Bertolozzi. Bridge Music was created by sampling the sounds of bridge’s surfaces (guard rails, girders, etc.) with various mallets and using those sounds to compose new works, making the Mid-Hudson Bridge the largest percussion instrument in the world. The music contains no other tones than those of the bridge itself.
In 2022, tolling for the bridge was converted from toll collectors in toll booths to All Electronic Tolling thereby eliminating the toll plazas.
New York State Bridge Authority 2 Toll Plaza Road Highland, New York, USA 12528
Phone
(845) 691-4077
Links
Read more...
Traffic
2018
2019
Average Annual Daily Traffic-AADT (Both directions)
39,964
40,447
Max. recorded daily traffic
49,704 (October)
49,470 (October)
Max. recorded traffic per hour per direction
2,357 (AM Peak)
2,470 (AM Peak)
Percentage of trucks
3%
Collisions Statistics
Toll Plaza area:
n/a
Bridge Deck:
33%
Approach:
67%
Lanes
Road lanes per direction:
One per direction + one reversible lane
Rail lanes per direction:
n/a
Pedestrian lane:
yes
Cyclist lane:
yes
Emergency lane:
no
Road wearing surface type
Suspended Spans:
31.75 mm (1.25 in) Asphalt
Approach Spans:
Polymer Modified Asphalt
Total length of the bridge
1.27 km (4,176 ft)
Main span
455.7 m (1,495 ft); side spans are 228.6 m (750 ft) and 230.1 m (755 ft)
Approach span
West approach spans:
39 m (128 ft)
East approach spans:
319.4 m (1,048 ft)
Pylon/tower
Type:
Steel tower
Height:
84.1 m (276 ft)
Type of girder
Suspension Span:
Stiffening
Height and width
H:
6.1 m (20 ft)
B:
84.1 m (276 ft)
Approach Spans:
vary
Type of foundation
Concrete foundation on gravel bed
River depth at main span
15.2 m (50 ft)
Vessel navigation channel
Width:
231.7 m (760 ft)
Clearance for vessels:
41.1 m (135 ft)
Vessel/Ship traffic
no information
Cable structure
Type, dimension etc. of main cable/stay cable
Main cable is comprised of 19 strands of 320 galvanized wires totaling 6,080 wires of 4.9784 mm (0.196 in) diameter for a nominal cable diameter of 425.45 mm (16.75 in).
Type, dimension etc. of hangers
Hangers are made of 47.625 mm (1.875 in) wire rope, 6x19 IWRC and socketed at each end.
Is the cable structure dehumidified
No
If so, year established
n/a
Expansion joints
Number
4 (2 at towers and 2 at abutments) and 13 on appproaches
Type
Finger Dams at towers and armored joints at abutments
Bearings
Type
Steel, bronze sliding and rocker
Extent of inspection and frequency
Biennial in-depth Inspections with maintenance inspections during the off years.
Main cable internal inspections have occurred since 1986 on a regular basis.
Two travelers are in each side span and in the main span.
Means of funding ongoing costs
Toll
Last updated: January 30, 2023
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