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I 93 NB over I 93 SB, AUSTN ST, MBTA

Map 

Coordinates:
+42.37306, -71.06917
42°22'23" N, 71°04'09" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:I 93 NB over I 93 SB, AUSTN ST, MBTA
Structure number:B166008YYDOTNBI
Location:I93/US1 INTERCHANGE
Purpose:Carries highway over highway and railroad
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:148.0 ft. [45.1 m]
Total length:532.5 ft. [162.3 m]
Roadway width between curbs:67.6 ft. [20.6 m]
Deck width edge-to-edge:71.5 ft. [21.8 m]
Vertical clearance below bridge:14.4 ft. [4.4 m]
Skew angle:99°
Owner:State Highway Agency [01]
Year built:2002
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 22.5 / HS 25 [9]
Number of main spans:4
Main spans material:Steel continuous [4]
Main spans design:Box beam or girders - Multiple [05]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: September 2014 

Status:Open, no restriction [A]
Average daily traffic:48,400 [as of 2013]
Truck traffic:9% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge not over waterway. [N]
Operating rating:74.1 tons [67.4 metric tons]
Inventory rating:44.4 tons [40.4 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:89.6
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$7,348,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
September 201489.6Functionally obsoleteGoodGoodGood48400
September 201289.6Functionally obsoleteGoodGoodGood47000
March 201089.6Not deficientGoodGoodGood47000
January 200822.0Not deficientGoodGoodSatisfactory174630