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US 20 N BEACON ST over WATER CHARLES RIVER

Map

Coordinates:
+42.35861, -71.16194
42°21'31" N, 71°09'43" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 20 N BEACON ST over WATER CHARLES RIVER
Structure number:B160144F8DOTNBI
Old structure number:MDC896070101 (from 1992 edition)
Location:.1 MI N OF I 90
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:75.1 ft. [22.9 m]
Total length:205.1 ft. [62.5 m]
Roadway width between curbs:54.1 ft. [16.5 m]
Deck width edge-to-edge:79.1 ft. [24.1 m]
Vertical clearance below bridge:14.1 ft. [4.3 m]
Skew angle:20°
Owner:State Highway Agency [01]
Year built:1915
Historic significance:Historical significance is not determinable at this time [4]
Design load:M 18 / H 20 [4]
Number of main spans:3
Main spans material:Concrete [1]
Main spans design:Arch - Deck [11]
Deck type:Not applicable [N]

Latest Available Inspection: July 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:28,707 [as of 2015]
Truck traffic:4% of total traffic
Superstructure condition:Fair [5 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Roadway alignment appraisal:Meets minimum tolerable limits to be left in place as is [4]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Operating rating:59.5 tons [54.1 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Sufficiency rating:61.8
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$8,549,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
July 201561.8Fair-FairFair-28707
July 201361.5Fair-FairFair-30500
July 201161.5Fair-FairFair-30500
July 200963.1Fair-FairFair-19900
July 199974.6Fair-SatisfactorySatisfactory-19900
July 199575.8Fair-SatisfactorySatisfactory-23108
July 199364.7Fair-FairFair-19637
July 199164.7Fair-FairFair-20000

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Reinforced Concrete Archlinear ft.2370158790
Substructure
Masonry Pier Walllinear ft.198198000
Masonry Abutmentlinear ft.168168000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.7900126364300