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Nearby Bridges in NBI 2021: 1


HWY BEACON ST over RR MBTA/BMRR (Route: 0)
Num:S170193GCDOT634x
Open: no restriction [A]
Built: 1899, Reconstructed: 1992
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.3 Miles (0.5 Kilometers)

Bridge Type
Main Span(s): Steel [3] Frame [07]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 19.7 m = 64.6 ft
Main Spans: 1 at 18.5 m = 60.7 ft
Approach Spans: 0
Skew: 32
Width, Roadway: 15.2 m = 49.9 ft (3 Lanes) and Out-To-Out: 21.9 m = 71.9 ft for a 19.5 m = 64.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Somerville [62535]: Middlesex County [017], Massachusetts [25]
Owned by State Highway Agency [01], DOT District: 4
305 M E OF SR2A
Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 60.3 metric ton = 66.3 tons (Load Factor(LF) [1])
Inventory: 36.3 metric ton = 39.9 tons (Load Factor(LF) [1])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Equal to present minimum criteria [6]
Waterway: N/A [N] and Bridge not over waterway. [N]
Inspections
Date: May 2020 [0520] and Frequency: 24
Future Work
Work Needed: Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 13250 (2018) and Trucks: 8%
Future ADT: 16519 (In 2031 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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