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HWY GRANITE AVE over WATER NEPONSET RIVER

Map 

Coordinates:
+42.27722, -71.05333
42°16'38" N, 71°03'12" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:HWY GRANITE AVE over WATER NEPONSET RIVER
Structure number:B160223A3DOTNBI
Old structure number:3A3054896000100 (from 1992 edition)
Location:MILTON TOWN LINE
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:65.0 ft. [19.8 m]
Total length:187.0 ft. [57.0 m]
Roadway width between curbs:47.9 ft. [14.6 m]
Deck width edge-to-edge:50.9 ft. [15.5 m]
Vertical clearance above deck:14.1 ft. [4.3 m]
Vertical clearance below bridge:5.9 ft. [1.8 m]
Owner:State Highway Agency [01]
Year built:1959
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:M 18 / H 20 [4]
Main span material:Steel [3]
Main span design:Movable - Bascule [16]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Other [9]

Latest Available Inspection: June 2015 

Status:Posted for load [P]
Average daily traffic:40,000 [as of 2015]
Truck traffic:6% of total traffic
Deck condition:Fair [5 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Basically intolerable requiring high priority of replacement [2]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Better than present minimum criteria [7]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is being eroded. River control devices and/or embankment have major damage. Trees and rush restrict the channel. [5]
Pier/abutment protection:In place and functioning [2]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Operating rating:16.2 tons [14.7 metric tons]
Inventory rating:9.7 tons [8.8 metric tons]
Evaluation:Structurally deficient [1]
Sufficiency rating:6.0
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$11,743,000

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
June 20156.0Structurally deficientFairPoorFair40000
June 20136.0Structurally deficientFairPoorFair31800
June 20116.0Structurally deficientFairPoorFair36000
June 200918.3Structurally deficientFairPoorFair36000
May 199916.3Structurally deficientPoorPoorSatisfactory35000
May 199757.2Functionally obsoleteFairFairGood32500
December 199447.8Functionally obsoleteFairFairGood26000