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I 93 NB over I 93 SB BT 57 - 61

Map

Coordinates:
+42.37917, -71.07611
42°22'45" N, 71°04'34" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 NB over I 93 SB BT 57 - 61
Structure number:B162813BPDOTNBI
Location:.5 MI N OF JCT I93&US1
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:82.0 ft. [25.0 m]
Total length:333.0 ft. [101.5 m]
Roadway width between curbs:62.0 ft. [18.9 m]
Deck width edge-to-edge:68.9 ft. [21.0 m]
Vertical clearance above deck:20.3 ft. [6.2 m]
Vertical clearance below bridge:15.1 ft. [4.6 m]
Owner:State Highway Agency [01]
Year built:1970
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:4
Main spans material:Steel [3]
Main spans design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: April 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:58,900 [as of 2016]
Truck traffic:8% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Superior to present desirable criteria [9]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Better than present minimum criteria [7]
Scour condition:Bridge not over waterway. [N]
Operating rating:62.3 tons [56.6 metric tons]
Inventory rating:37.2 tons [33.8 metric tons]
Sufficiency rating:88.2
Recommended work:Other structural work, including hydraulic replacements. [38]
Estimated cost of work:$2,302,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
April 201688.2FairSatisfactorySatisfactorySatisfactoryFO58900
April 201474.6FairSatisfactorySatisfactoryFairFO74200
April 201282.3FairSatisfactorySatisfactorySatisfactoryFO74200
April 201082.3FairSatisfactorySatisfactorySatisfactoryFO74200
April 200882.3FairSatisfactorySatisfactorySatisfactoryFO74200

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.1,7821,441153260
Steel Protective Coatingsq. ft.1,9981,998000
Steel Stringerlinear ft.2,5851,93906460
Steel Protective Coatingsq. ft.1,9981,998000
Deck
Reinforced Concrete Decksq. ft.30,88529,1811,70400
Wearing Surfacessq. ft.30,38728,8681,51900
Superstructure
Steel Floor Beamlinear ft.52226102610
Steel Protective Coatingsq. ft.999999000
Substructure
Steel Columneach3252933200
Steel Protective Coatingsq. ft.1,9981,998000
Reinforced Concrete Columneach119110
Steel Pier Caplinear ft.837213583410
Steel Protective Coatingsq. ft.2,9972,997000
Joints
Compression Jointlinear ft.9898000
Bridge Rail
Other Material Bridge Raillinear ft.659659000