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: 10.7 m = 35.1 ft
Main Spans: 1 at 9.1 m = 29.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.3 m = 24.0 ft (2 Lanes) and Out-To-Out: 11.5 m = 37.7 ft for a 7.9 m = 25.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Alton [01060]: Belknap County [001], New Hampshire [33]
Owned by State Highway Agency [01], DOT District: 3
8.5 MI FROM GILFORD TL
Condition
Deck: Poor [4]
Superstructure: Poor [4]
Substructure: Satisfactory [6]
Loading
Design: M 13.5 / H 15 [2]
Operating: 51 metric ton = 56.1 tons (Load Factor(LF) [1])
Inventory: 30.6 metric ton = 33.7 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 replacement [2]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] 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: 4 km = 2.5 mi
Traffic
ADT: 7981 (2019) and Trucks: 7%
Future ADT: 11811 (In 2041
)
