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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

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
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 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:46,984 [as of 2015]
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]
Sufficiency rating:89.6
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$10,925,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
September 201689.6GoodGoodGoodGoodFO46984
September 201489.6GoodGoodGoodGoodFO48400
September 201289.6GoodGoodGoodGoodFO47000
March 201089.6GoodGoodGoodGood-47000
January 200822.0FairGoodGoodSatisfactory-174630

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Closed Web/Box Girderlinear ft.2,1311,81132000
Steel Protective Coatingsq. ft.1,9981,998000
Deck
Reinforced Concrete Decksq. ft.43,83743,837000
Wearing Surfacessq. ft.43,83743,837000
Substructure
Steel Columneach22000
Steel Protective Coatingsq. ft.1,9981,998000
Reinforced Concrete Columneach99000
Steel Pier Caplinear ft.5754898600
Steel Protective Coatingsq. ft.1,9981,998000
Joints
Strip Seal Jointlinear ft.6767000
Assembly with Sealeach9191000
Bearings
Pot Bearingeach99000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.1,0651,0541100