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Nearby Bridges in NBI 2021: 1


WESTPORT ROAD over ASHUELOT RIVER (Route: 0)
Num:25100800009000x
Posted for load [P]
Built: 1862, Reconstructed: 2001
Historic: Bridge is on the NRHP. [1]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Wood or timber [7] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Wood or Timber [7]
Bridge Dimensions
Length: 43.6 m = 143.1 ft
Main Spans: 1 at 37.5 m = 123.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.1 m = 13.5 ft (1 Lanes) and Out-To-Out: 5.2 m = 17.1 ft for a 5.2 m = 17.1 ft approaching roadway.
Vertical Clearance: 4.11 m = 13.5 ft and Navigational Clearance: 0 = N/A
Location
Swanzey [75700]: Cheshire County [005], New Hampshire [33]
Owned by City or Municipal Highway Agency [04], DOT District: 4
.68 MI NE WINCHESTER TL
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 13.5 / HS 15 [3]
Operating: 27 metric ton = 29.7 tons (Load Factor(LF) [1])
Inventory: 25.5 metric ton = 28.1 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: August 2020 [0820] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 734 (2019) and Trucks: 10%
Future ADT: 1086 (In 2041 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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