Share:

HWY BEACON ST over COMB I 90 & MBTA/CSX

Map 

Coordinates:
+42.34778, -71.10083
42°20'52" N, 71°06'03" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:HWY BEACON ST over COMB I 90 & MBTA/CSX
Structure number:B160544T2DOTNBI
Location:.1MI.W.BROOKLINE AVE S50
Purpose:Carries highway and pedestrian walkway over highway and railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:136.2 ft. [41.5 m]
Total length:355.0 ft. [108.2 m]
Roadway width between curbs:82.0 ft. [25.0 m]
Deck width edge-to-edge:102.4 ft. [31.2 m]
Vertical clearance below bridge:14.4 ft. [4.4 m]
Skew angle:25°
Owner:State Highway Agency [01]
Year built:1965
Year reconstructed:1993
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: February 2014 

Status:Open, no restriction [A]
Average daily traffic:10,900 [as of 2012]
Truck traffic:13% of total traffic
Deck condition:Poor [4 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:32.1 tons [29.2 metric tons]
Inventory rating:17.8 tons [16.2 metric tons]
Evaluation:Structurally deficient [1]
Sufficiency rating:49.8
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$12,280,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
February 201449.8Structurally deficientPoorSatisfactoryFair10900
February 201273.7Structurally deficientPoorSatisfactoryFair10900
March 201072.7Structurally deficientPoorSatisfactoryFair10900
January 200872.2Functionally obsoleteFairSatisfactoryFair19900