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Nearby Bridges in NBI 2021: 4


NH 12 over MILL POND (Route: 12)
Num:25800980008600x
Open: no restriction [A]
Built: 1928, Reconstructed: 1968
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Masonry [8] Arch - Deck [11]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 17.1 m = 56.1 ft
Main Spans: 1 at 4.9 m = 16.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 9.1 m = 29.9 ft (2 Lanes) and Out-To-Out: 11.9 m = 39.0 ft for a 9.1 m = 29.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Troy [77380]: Cheshire County [005], New Hampshire [33]
Owned by State Highway Agency [01], DOT District: 4
1.37 MI. FITZWILLIAM TL
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design:
Operating: 28.1 metric ton = 30.9 tons (Load Factor(LF) [1])
Inventory: 17.2 metric ton = 18.9 tons (Load Factor(LF) [1])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
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: July 2020 [0720] 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: 1.6 km = 1.0 mi
Traffic
ADT: 8320 (2019) and Trucks: 7%
Future ADT: 12313 (In 2041 )
HIGH STREET over NHRR(ABD) (Route: 0)
Num:25800940008600x
Open: no restriction [A]
Built: 1953, Reconstructed: N/A [0000]
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.2 Kilometers)

Bridge Type
Main Span(s): Steel [3] 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: 11.3 m = 37.1 ft
Main Spans: 1 at 10.7 m = 35.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 6.7 m = 22.0 ft (2 Lanes) and Out-To-Out: 8.8 m = 28.9 ft for a 6.7 m = 22.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Troy [77380]: Cheshire County [005], New Hampshire [33]
Owned by City or Municipal Highway Agency [04], DOT District: 4
0.04MI RTE 12
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Satisfactory [6]
Loading
Design: M 18 / H 20 [4]
Operating: 24.3 metric ton = 26.7 tons (Allowable Stress(AS) [2])
Inventory: 16.5 metric ton = 18.2 tons (Allowable Stress(AS) [2])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Equal to present minimum criteria [6]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: October 1999 [1099] 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: 15.9 km = 9.9 mi
Traffic
ADT: 1199 (2019) and Trucks: 4%
Future ADT: 1774 (In 2041 )
NH 12 over NHRR(ABD) (Route: 12)
Num:25800960009100x
Open: no restriction [A]
Built: 1957, Reconstructed: N/A [0000]
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.3 Kilometers)

Bridge Type
Main Span(s): Steel [3] 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: 21.6 m = 70.9 ft
Main Spans: 2 at 11.9 m = 39.0 ft
Approach Spans: 0
Skew: 56
Width, Roadway: 9.1 m = 29.9 ft (2 Lanes) and Out-To-Out: 12.6 m = 41.3 ft for a 9.1 m = 29.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Troy [77380]: Cheshire County [005], New Hampshire [33]
Owned by State Highway Agency [01], DOT District: 4
0.3MI TO TROY CENTER
Condition
Deck: Poor [4]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 25.1 metric ton = 27.6 tons (Load Factor(LF) [1])
Inventory: 15.1 metric ton = 16.6 tons (Load Factor(LF) [1])
Appraisal
Structural: Basically intolerable requiring high priority of replacement [2]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Better than present minimum criteria [7]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: November 2020 [1120] and Frequency: 8
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: 8320 (2019) and Trucks: 7%
Future ADT: 12313 (In 2041 )
MILL STREET over MILL TAIL RACE (Route: 0)
Num:25801010008800x
Open: no restriction [A]
Built: 1936, 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): Concrete [1] Slab [01]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 8.2 m = 26.9 ft
Main Spans: 1 at 7.3 m = 24.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.7 m = 25.3 ft (2 Lanes) and Out-To-Out: 8.8 m = 28.9 ft for a 6.4 m = 21.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Troy [77380]: Cheshire County [005], New Hampshire [33]
Owned by State Highway Agency [01], DOT District: 4
.25 MI JCT NH 12
Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: M 13.5 / H 15 [2]
Operating: 56.2 metric ton = 61.8 tons (Load Factor(LF) [1])
Inventory: 33.6 metric ton = 37.0 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Equal to present minimum criteria [6]
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: June 1999 [699] 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: 1.6 km = 1.0 mi
Traffic
ADT: 91 (2019) and Trucks: 4%
Future ADT: 134 (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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