NH 12 over S BRANCH ASHUELOT RIVER (Route: 12)
Num:25800870011600x
Open: no restriction [A]
Built: 1941, Reconstructed: 1997
Historic: Bridge is possibly eligible for the NRHP. [3]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Frame [07]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 11 m = 36.1 ft
Main Spans: 1 at 9.8 m = 32.2 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 9.5 m = 31.2 ft (11 Lanes) and Out-To-Out: 10.7 m = 35.1 ft for a 9.8 m = 32.2 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
1.6 MI S TO TROY CENTER

Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 66.3 metric ton = 72.9 tons (Load Factor(LF) [1])
Inventory: 39.6 metric ton = 43.6 tons (Load Factor(LF) [1])

Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] 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: 9137 (2019) and Trucks: 9%
Future ADT: 13522 (In 2041 )

NH 12 over S BRANCH ASHUELOT RIVER (Route: 12)
Num:25800890011400x
Open: no restriction [A]
Built: 1941, 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): Concrete [1] Frame [07]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]

Bridge Dimensions
Length: 11 m = 36.1 ft
Main Spans: 1 at 9.8 m = 32.2 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8.7 m = 28.5 ft (2 Lanes) and Out-To-Out: 9.8 m = 32.2 ft for a 9.8 m = 32.2 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
1.5 MI S TO TROY CENTER

Condition
Deck: Serious [3]
Superstructure: Serious [3]
Substructure: Fair [5]
Loading
Design: M 13.5 / H 15 [2]
Operating: 69.8 metric ton = 76.8 tons (Load Factor(LF) [1])
Inventory: 41.8 metric ton = 46.0 tons (Load Factor(LF) [1])

Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
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: 0.5 km = 0.3 mi
Traffic
ADT: 9137 (2019) and Trucks: 7%
Future ADT: 13522 (In 2041 )