I 93 BT NB4-N ABT over I 93 CONN D & K


+42.38083, -71.07667
42°22'51" N, 71°04'36" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:I 93 BT NB4-N ABT over I 93 CONN D & K
Structure number:B162813BRDOTNBI
Location:1.9 KM N OF JCT US1&I93
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:138.1 ft. [42.1 m]
Total length:370.1 ft. [112.8 m]
Roadway width between curbs:67.9 ft. [20.7 m]
Deck width edge-to-edge:71.5 ft. [21.8 m]
Vertical clearance below bridge:15.4 ft. [4.7 m]
Skew angle:99°
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:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: November 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:67,158 [as of 2014]
Truck traffic:13% 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:Equal to present minimum criteria [6]
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:61.9 tons [56.3 metric tons]
Inventory rating:37.1 tons [33.7 metric tons]
Sufficiency rating:87.4
Recommended work:Widening of existing bridge or other major structure without deck rehabilitation or replacement [33]
Estimated cost of work:$2,140,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201587.4FairSatisfactorySatisfactorySatisfactoryFO67158
November 201387.0FairSatisfactorySatisfactorySatisfactoryFO70994
November 201181.0FairSatisfactorySatisfactorySatisfactoryFO155000
December 200981.0FairSatisfactorySatisfactorySatisfactoryFO152000

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.3,2612,95730130
Reinforced Concrete Decksq. ft.25,74125,7092480
Wearing Surfacessq. ft.25,13425,0944000
Reinforced Concrete Columneach1661000
Reinforced Concrete Abutmentlinear ft.1441212300
Reinforced Concrete Pier Caplinear ft.28620165200
Compression Jointlinear ft.41192200
Other Jointlinear ft.2121000
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.741741000