Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 1447.2 m = 4748.3 ft
Main Spans: 1 at 87.5 m = 287.1 ft
Approach Spans: 29
Skew: 0
Width, Roadway: 21.9 m = 71.9 ft (4 Lanes) and Out-To-Out: 26.2 m = 86.0 ft for a 21.9 m = 71.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 19.8 m = 65.0 ft
Location
South Portland [71990]: Cumberland County [005], Maine [23]
Owned by State Highway Agency [01], DOT District: 1
PORTLAND - S PORTLAND TL
Condition
Deck: Very Good [8]
Superstructure: Good [7]
Substructure: Very Good [8]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 36 metric ton = 39.6 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 27.5 metric ton = 30.3 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: Superior to present desirable criteria [9]
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: May 2020 [0520] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 14893 (2016) and Trucks: 5%
Future ADT: 20850 (In 2036
)