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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
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

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 2014 

Status:Open, no restriction [A]
Average daily traffic:74,200 [as of 2014]
Truck traffic:8% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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]
Evaluation:Functionally obsolete [2]
Sufficiency rating:74.6
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$7,735,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
April 201474.6Functionally obsoleteSatisfactorySatisfactoryFair74200
April 201282.3Functionally obsoleteSatisfactorySatisfactorySatisfactory74200
April 201082.3Functionally obsoleteSatisfactorySatisfactorySatisfactory74200
April 200882.3Functionally obsoleteSatisfactorySatisfactorySatisfactory74200