Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 312.4 m = 1025.0 ft
Main Spans: 1 at 22.9 m = 75.1 ft
Approach Spans: 13
Skew: 0
Width, Roadway: 18.3 m = 60.0 ft (4 Lanes) and Out-To-Out: 21.9 m = 71.9 ft for a 21.9 m = 71.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 6.1 m = 20.0 ft
Location
Westport [77570]: Bristol County [005], Massachusetts [25]
Owned by State Highway Agency [01], DOT District: 5
.8 MI S OF DRIFT RD.
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 31.7 metric ton = 34.9 tons (Load Factor(LF) [1])
Inventory: 19 metric ton = 20.9 tons (Load Factor(LF) [1])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
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: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Inspections
Date: October 2020 [1020] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 1.9 km = 1.2 mi
Traffic
ADT: 6500 (2018) and Trucks: 2%
Future ADT: 11845 (In 2031
)
