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HWY TREMONT ST over COMB I 90 & AMTRAK

Map

Coordinates:
+42.34750, -71.06861
42°20'51" N, 71°04'07" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:HWY TREMONT ST over COMB I 90 & AMTRAK
Structure number:B160434TFDOTNBI
Location:.32 KM S. OF BOST COM S68
Purpose:Carries highway and pedestrian walkway over highway and railroad
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:58.1 ft. [17.7 m]
Total length:170.9 ft. [52.1 m]
Roadway width between curbs:60.0 ft. [18.3 m]
Deck width edge-to-edge:82.4 ft. [25.1 m]
Vertical clearance below bridge:14.4 ft. [4.4 m]
Skew angle:54°
Owner:State Highway Agency [01]
Year built:1965
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:3
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: November 2015

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:12,931 [as of 2015]
Truck traffic:2% of total traffic
Deck condition:Poor [4 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:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:103.3 tons [93.9 metric tons]
Inventory rating:61.8 tons [56.2 metric tons]
Sufficiency rating:71.4
Recommended work:Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Estimated cost of work:$7,490,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201571.4PoorPoorFairFairSD12931
November 201371.5PoorPoorFairFairSD11800
December 201172.1PoorPoorSatisfactoryFairSD15000
July 201073.5PoorPoorGoodFairSD19900
July 200873.5PoorPoorGoodFairSD19900

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Superstructure
Steel Girder/Beamlinear ft.2,5201,550960100
Steel Protective Coatingsq. ft.49,44010,00024,44015,0000
Deck
Reinforced Concrete Decksq. ft.14,50085013,0755750
Wearing Surfacessq. ft.11,150011,15000
Substructure
Reinforced Concrete Columneach130904
Reinforced Concrete Pier Walllinear ft.98683000
Reinforced Concrete Abutmentlinear ft.1251065500
Reinforced Concrete Pier Caplinear ft.350100195550
Joints
Strip Seal Jointlinear ft.1805472540
Bearings
Movable Bearingeach4904900
Steel Protective Coatingsq. ft.196019600
Fixed Bearingeach5005000
Steel Protective Coatingsq. ft.225022500
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.342336600