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Nearby Bridges in NBI 2021: 3


CHRISTIAN HILL RD over NHRR(ABD) (Route: 0)
Num:25100980012200x
Bridge closed to all traffic [K]
Built: 1930, Reconstructed: 1960
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Wood or timber [7] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 22.6 m = 74.2 ft
Main Spans: 3 at 7.3 m = 24.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.5 m = 14.8 ft (1 Lanes) and Out-To-Out: 6.3 m = 20.7 ft for a 4.9 m = 16.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 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
50 FT FROM SOUTH GROVE S
Condition
Deck: Imminent Failure [1]
Superstructure: Imminent Failure [1]
Substructure: Imminent Failure [1]
Loading
Design:
Operating: 0 metric ton = 0.0 tons ()
Inventory: 0 metric ton = 0.0 tons ()
Appraisal
Structural:
Deck Geometry:
Road Alignment: Equal to present minimum criteria [6]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: August 2020 [0820] and Frequency: 16
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: 1972 (2019) and Trucks: 4%
Future ADT: 2918 (In 2041 )
DENMAN THOMPSON HW over ASHUELOT RIVER (Route: 0)
Num:25100940011900x
Open: no restriction [A]
Built: 1976, Reconstructed: N/A [0000]
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 Kilometers)

Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 59.7 m = 195.9 ft
Main Spans: 2 at 29 m = 95.1 ft
Approach Spans: 0
Skew: 25
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 11 m = 36.1 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 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
0.19 MI FR WINCHESTER ST
Condition
Deck: Fair [5]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 48.1 metric ton = 52.9 tons (Load Factor(LF) [1])
Inventory: 32.7 metric ton = 36.0 tons (Load Factor(LF) [1])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
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: 0.6 km = 0.4 mi
Traffic
ADT: 1446 (2019) and Trucks: 4%
Future ADT: 2140 (In 2041 )
MAIN STREET over ASHUELOT RIVER (Route: 0)
Num:25100930012400x
Posted for load [P]
Built: 1832, Reconstructed: 1993
Historic: Bridge is on the NRHP. [1]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 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:
Bridge Dimensions
Length: 46.3 m = 151.9 ft
Main Spans: 2 at 19.5 m = 64.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 3.8 m = 12.5 ft (1 Lanes) and Out-To-Out: 5.4 m = 17.7 ft for a 6.1 m = 20.0 ft approaching roadway.
Vertical Clearance: 2.59 m = 8.5 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
340 FT FROM WINCHESTER S
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design:
Operating: 4.5 metric ton = 5.0 tons (Load Factor(LF) [1])
Inventory: 2.7 metric ton = 3.0 tons (Load Factor(LF) [1])
Appraisal
Structural: Basically intolerable requiring high priority of replacement [2]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Better than present minimum criteria [7] and Countermeasures have been installed to mitigate an existing problem with scour. [7]
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: 0.6 km = 0.4 mi
Traffic
ADT: 1972 (2019) and Trucks: 4%
Future ADT: 2918 (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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