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


+42.38693, -71.07805
42°23'13" N, 71°04'41" 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:65.6 ft. [20.0 m]
Deck width edge-to-edge:71.9 ft. [21.9 m]
Vertical clearance below bridge:13.1 ft. [4.0 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 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:93,327 [as of 2016]
Truck traffic:13% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Fair [5 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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]
Sufficiency rating:72.4
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$12,820,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2017FairSatisfactoryFairSatisfactory9332772.4
November 2015FairSatisfactorySatisfactorySatisfactory6715887.4
November 2013FairSatisfactorySatisfactorySatisfactory7099487.0
November 2011FairSatisfactorySatisfactorySatisfactory15500081.0
December 2009FairSatisfactorySatisfactorySatisfactory15200081.0

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
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