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HWY BOYLSTON ST over COMB I 90 & MBTA/CSX

Map 

Coordinates:
+42.34722, -71.08722
42°20'50" N, 71°05'14" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:HWY BOYLSTON ST over COMB I 90 & MBTA/CSX
Structure number:B160504T6DOTNBI
Location:AT PRU CENTER S55
Purpose:Carries highway and pedestrian walkway over highway and railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:173.9 ft. [53.0 m]
Total length:450.2 ft. [137.2 m]
Roadway width between curbs:60.0 ft. [18.3 m]
Deck width edge-to-edge:82.4 ft. [25.1 m]
Vertical clearance below bridge:14.1 ft. [4.3 m]
Skew angle:70°
Owner:State Highway Agency [01]
Year built:1965
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:Bituminous [6]

Latest Available Inspection: August 2014 

Status:Open, no restriction [A]
Average daily traffic:30,700 [as of 2012]
Truck traffic:17% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 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: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:54.7 tons [49.7 metric tons]
Inventory rating:32.5 tons [29.5 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:70.3
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$12,508,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
August 201470.3Functionally obsoleteGoodSatisfactoryFair30700
August 201272.1Functionally obsoleteGoodSatisfactoryFair30700
August 201075.1Functionally obsoleteGoodGoodFair30700
December 200778.3Functionally obsoleteGoodGoodFair19900