I 93 SB B16-SB4 over COMB CAMBRIGE&MBTA/BMRR
Map
Coordinates:
+42.38278, -71.0769442°22'58" N, 71°04'37" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.
Facts
Name: | I 93 SB B16-SB4 over COMB CAMBRIGE&MBTA/BMRR |
Structure number: | B162813EGDOTNBI |
Location: | 1.2 MI N OF JCT I93&US1 |
Purpose: | Carries highway over highway and railroad |
Route classification: | Principal Arterial - Interstate (Urban) [11] |
Length of largest span: | 212.0 ft. [64.6 m] |
Total length: | 1214.0 ft. [370.0 m] |
Roadway width between curbs: | 65.0 ft. [19.8 m] |
Deck width edge-to-edge: | 71.2 ft. [21.7 m] |
Vertical clearance above deck: | 15.1 ft. [4.6 m] |
Vertical clearance below bridge: | 14.8 ft. [4.5 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: | 11 |
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: July 2015
Good/Fair/Poor Condition: | Fair |
Status: | Open, no restriction [A] |
Average daily traffic: | 47,940 [as of 2012] |
Truck traffic: | 12% of total traffic |
Deck condition: | Satisfactory [6 out of 9] |
Superstructure condition: | Fair [5 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: | 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: | Better than present minimum criteria [7] |
Scour condition: | Bridge not over waterway. [N] |
Operating rating: | 61.2 tons [55.6 metric tons] |
Inventory rating: | 36.6 tons [33.3 metric tons] |
Sufficiency rating: | 73.2 |
Recommended work: | Bridge rehabilitation because of general structure deterioration or inadequate strength. [35] |
Estimated cost of work: | $45,323,000 |
Previous Inspections
Date | Suff. Rating | Condition | Deck | Superstructure | Substructure | SD/FO | ADT |
---|
July 2015 | 73.2 | Fair | Satisfactory | Fair | Fair | FO | 47940 |
July 2013 | 73.2 | Fair | Satisfactory | Fair | Fair | FO | 47940 |
April 2011 | 69.8 | Fair | Satisfactory | Fair | Fair | FO | 75900 |
January 2009 | 69.8 | Fair | Satisfactory | Fair | Fair | FO | 75900 |