Bridge Type
Main Span(s): Steel [3] Movable - Lift [15]
Approach Span(s): Prestressed concrete [5] Segmental box girder [21]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 848.6 m = 2784.3 ft
Main Spans: 1 at 102.1 m = 335.0 ft
Approach Spans: 10
Skew: 0
Width, Roadway: 10.1 m = 33.1 ft (2 Lanes) and Out-To-Out: 11.3 m = 37.1 ft for a 10.1 m = 33.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 41.1 m = 134.8 ft
Location
Portsmouth [62900]: Rockingham County [015], New Hampshire [33]
Owned by Local Toll Authority [32], DOT District: 6
MAINE STATELINE
Condition
Deck: Very Good [8]
Superstructure: Very Good [8]
Substructure: Very Good [8]
Loading
Design: HL93 [A]
Operating: 49 metric ton = 53.9 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 37.8 metric ton = 41.6 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Equal to present desirable criteria [8]
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
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: January 1999 [199] 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: 12300 (2019) and Trucks: 5%
Future ADT: 18204 (In 2041
)