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Nearby Bridges in NBI 2021: 1


US 3:NH 25 over PEMIGEWASSET RIVER:NHRR (Route: 3)
Num:1100760008000x
Open: no restriction [A]
Built: 1937, Reconstructed: 1987
Historic: Bridge is eligible for the NRHP. [2]

Google Streetview (If Available)

Rough Distance: 0.1 Miles (0.1 Kilometers)

Bridge Type
Main Span(s): Steel [3] Truss - Deck [09]
Approach Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Deck: Closed Grating [4] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 243.8 m = 799.9 ft
Main Spans: 2 at 75.9 m = 249.0 ft
Approach Spans: 7
Skew: 0
Width, Roadway: 8.2 m = 26.9 ft (2 Lanes) and Out-To-Out: 8.8 m = 28.9 ft for a 7.3 m = 24.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Ashland [02020]: Grafton County [009], New Hampshire [33]
Owned by State Highway Agency [01], DOT District: 3
BRIDGEWATER TL
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Fair [5]
Loading
Design: M 13.5 / H 15 [2]
Operating: 34.9 metric ton = 38.4 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 26.9 metric ton = 29.6 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Superior to present desirable criteria [9] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: April 2020 [0420] 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: 0.8 km = 0.5 mi
Traffic
ADT: 1811 (2019) and Trucks: 4%
Future ADT: 2680 (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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