Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 502.5 m = 1648.7 ft
Main Spans: 9 at 83.8 m = 274.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 21.2 m = 69.6 ft (4 Lanes) and Out-To-Out: 22.9 m = 75.1 ft for a 21.3 m = 69.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 14.2 m = 46.6 ft
Location
Dover [18820]: Strafford County [017], New Hampshire [33]
Owned by State Toll Authority [31], DOT District: 6
DOVER-NEWINGTON T.L.
Condition
Deck: Excellent [9]
Superstructure: Excellent [9]
Substructure: Excellent [9]
Loading
Design: HL93 [A]
Operating: 61.1 metric ton = 67.2 tons (Load Factor(LF) [1])
Inventory: 36.6 metric ton = 40.3 tons (Load Factor(LF) [1])
Appraisal
Structural: Superior to present desirable criteria [9]
Deck Geometry: Better than present minimum criteria [7]
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: April 1999 [499] 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: 2.9 km = 1.8 mi
Traffic
ADT: 34782 (2019) and Trucks: 8%
Future ADT: 51477 (In 2041
)