Bridge Type
Main Span(s): Steel [3] Movable - Lift [15]
Approach Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 428.8 m = 1406.9 ft
Main Spans: 1 at 98.8 m = 324.2 ft
Approach Spans: 8
Skew: 1
Width, Roadway: 17.7 m = 58.1 ft (4 Lanes) and Out-To-Out: 22.5 m = 73.8 ft for a 17.7 m = 58.1 ft approaching roadway.
Vertical Clearance: 5.33 m = 17.5 ft and Navigational Clearance: 53.5 m = 175.5 ft
Location
Quincy [55745]: Norfolk County [021], Massachusetts [25]
Owned by State Highway Agency [01], DOT District: 6
AT WEYMOUTH TWN LINE
Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: HL93 [A]
Operating: 42.1 metric ton = 46.3 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 32.4 metric ton = 35.6 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: October 2020 [1020] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.5 km = 0.3 mi
Traffic
ADT: 39120 (2018) and Trucks: 5%
Future ADT: 0 (In 21
)
