I 93 SB B10-B16 over RR MBTA/BMRR
Map
Coordinates:
+42.38236, -71.0766142°22'56" N, 71°04'36" W
Facts
Source: National Bridge Inventory. Information not verified; use at your own risk.
Name: | I 93 SB B10-B16 over RR MBTA/BMRR |
Structure number: | B162813EEDOTNBI |
Location: | 1 MI N OF JCT I93&US1 |
Purpose: | Carries highway over railroad |
Route classification: | Principal Arterial - Interstate (Urban) [11] |
Length of largest span: | 76.1 ft. [23.2 m] |
Total length: | 442.0 ft. [134.7 m] |
Roadway width between curbs: | 44.9 ft. [13.7 m] |
Deck width edge-to-edge: | 57.1 ft. [17.4 m] |
Vertical clearance above deck: | 17.1 ft. [5.2 m] |
Vertical clearance below bridge: | 32.8 ft. [10.0 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+Mod / HS 20+Mod [6] |
Number of main spans: | 6 |
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: July 2017
Good/Fair/Poor Condition: | Fair |
Status: | Open, no restriction [A] |
Average daily traffic: | 87,100 [as of 2017] |
Truck traffic: | 9% 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: | Somewhat better than minimum adequacy to tolerate being left in place as is [5] |
Roadway alignment appraisal: | Better than present minimum criteria [7] |
Scour condition: | Bridge not over waterway. [N] |
Sufficiency rating: | 73.0 |
Recommended work: | Bridge rehabilitation because of general structure deterioration or inadequate strength. [35] |
Estimated cost of work: | $12,169,000 |
Previous Inspections
Date | Condition | Deck | Superstructure | Substructure | ADT | Suff. Rating |
---|
July 2017 | Fair | Satisfactory | Fair | Fair | 87100 | 73.0 |
July 2015 | Fair | Satisfactory | Fair | Fair | 47940 | 77.5 |
July 2013 | Fair | Satisfactory | Fair | Fair | 47940 | 75.3 |
March 2011 | Fair | Satisfactory | Fair | Fair | 68700 | 72.9 |
June 2008 | Fair | Satisfactory | Fair | Fair | 68700 | 72.9 |
Element Data
Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Element | Units | Quantity | 1-Good | 2-Fair | 3-Poor | 4-Serious |
---|
Superstructure |
Steel Girder/Beam | linear ft. | 1,798 | 1,611 | 142 | 45 | 0 |
Steel Protective Coating | sq. ft. | 26,022 | 23,772 | 1,160 | 1,090 | 0 |
Steel Stringer | linear ft. | 1,771 | 1,771 | 0 | 0 | 0 |
Steel Protective Coating | sq. ft. | 12,324 | 12,324 | 0 | 0 | 0 |
Deck |
Reinforced Concrete Deck | sq. ft. | 25,920 | 25,868 | 24 | 28 | 0 |
Wearing Surfaces | sq. ft. | 22,737 | 22,637 | 100 | 0 | 0 |
Superstructure |
Steel Floor Beam | linear ft. | 402 | 392 | 0 | 10 | 0 |
Steel Protective Coating | sq. ft. | 5,020 | 4,895 | 125 | 0 | 0 |
Substructure |
Steel Column | each | 18 | 14 | 0 | 4 | 0 |
Steel Protective Coating | sq. ft. | 37,406 | 37,358 | 0 | 48 | 0 |
Steel Pier Cap | linear ft. | 587 | 367 | 135 | 85 | 0 |
Steel Protective Coating | sq. ft. | 15,642 | 9,542 | 4,327 | 1,305 | 468 |
Joints |
Open Joint | linear ft. | 150 | 149 | 1 | 0 | 0 |
Bridge Rail |
Other Material Bridge Rail | linear ft. | 883 | 855 | 1 | 27 | 0 |