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Nearby Bridges in NBI 2021: 3


NH 12:NH101 over ASHUELOT RIVER:PED TRAIL (Route: 12)
Num:13601320006000x
Open: no restriction [A]
Built: 1961, 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 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: 37.8 m = 124.0 ft
Main Spans: 2 at 18.3 m = 60.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 13.6 m = 44.6 ft (2 Lanes) and Out-To-Out: 14.3 m = 46.9 ft for a 13.4 m = 44.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Keene [39300]: Cheshire County [005], New Hampshire [33]
Owned by State Highway Agency [01], DOT District: 4
1.0 MI. FROM KEENE CENTER
Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 39 metric ton = 42.9 tons (Load Factor(LF) [1])
Inventory: 23.6 metric ton = 26.0 tons (Load Factor(LF) [1])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: March 1999 [399] 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: 0.3 km = 0.2 mi
Traffic
ADT: 23568 (2019) and Trucks: 5%
Future ADT: 34880 (In 2041 )
NH 12 over BEAVER BROOK (Route: 12)
Num:13601370005900x
Open: no restriction [A]
Built: 1961, Reconstructed: 2019
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): Prestressed concrete [5] Frame [07]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Low slump Concrete [4]
Bridge Dimensions
Length: 8.5 m = 27.9 ft
Main Spans: 2 at 3.7 m = 12.1 ft
Approach Spans: 0
Skew: 5
Width, Roadway: 24.4 m = 80.1 ft (4 Lanes) and Out-To-Out: 24.4 m = 80.1 ft for a 23.5 m = 77.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Keene [39300]: Cheshire County [005], New Hampshire [33]
Owned by City or Municipal Highway Agency [04], DOT District: 4
.97 MI NW SWANZEY TL
Condition
Deck: Excellent [9]
Superstructure: Excellent [9]
Substructure: Very Good [8]
Loading
Design: M 18 / H 20 [4]
Operating: 89.8 metric ton = 98.8 tons (Load Factor(LF) [1])
Inventory: 89.8 metric ton = 98.8 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present desirable criteria [8]
Deck Geometry: Superior to present desirable criteria [9]
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 1999 [799] 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: 20024 (2019) and Trucks: 5%
Future ADT: 29635 (In 2041 )
NH 12 over BRANCH RIVER (Route: 12)
Num:13601380005600x
Open: no restriction [A]
Built: 1994, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.4 Miles (0.6 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: 35.7 m = 117.1 ft
Main Spans: 1 at 34.1 m = 111.9 ft
Approach Spans: 0
Skew: 15
Width, Roadway: 13.4 m = 44.0 ft (2 Lanes) and Out-To-Out: 19.7 m = 64.6 ft for a 13.4 m = 44.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Keene [39300]: Cheshire County [005], New Hampshire [33]
Owned by City or Municipal Highway Agency [04], DOT District: 4
1.0 MI FROM KEENE CENTER
Condition
Deck: Good [7]
Superstructure: Very Good [8]
Substructure: Very Good [8]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 82.6 metric ton = 90.9 tons (Load Factor(LF) [1])
Inventory: 49 metric ton = 53.9 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present desirable criteria [8]
Deck Geometry: Equal to present minimum criteria [6]
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: July 1999 [799] 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: 0.5 km = 0.3 mi
Traffic
ADT: 20024 (2019) and Trucks: 7%
Future ADT: 29635 (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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