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US 1 BRIDGE RD over WATER MERRIMACK RIVER

Map

Coordinates:
+42.81592, -70.87285
42°48'57" N, 70°52'22" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:US 1 BRIDGE RD over WATER MERRIMACK RIVER
Structure number:N110112TDDOTNBI
Old structure number:2TD005525014101 (from 1992 edition)
Location:AT MERRIMAC RIVER
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Collector (Urban) [17]
Length of largest span:145.0 ft. [44.2 m]
Total length:1223.2 ft. [372.8 m]
Roadway width between curbs:69.9 ft. [21.3 m]
Deck width edge-to-edge:82.0 ft. [25.0 m]
Vertical clearance below bridge:32.8 ft. [10.0 m]
Skew angle:
Owner:State Highway Agency [01]
Year built:1976
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Steel [3]
Main span design:Movable - Bascule [16]
Deck type:Open Grating [3]
Wearing surface:Other [9]

Latest Available Inspection: September 2018

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:27,000 [as of 2018]
Truck traffic:3% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Fair [5 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Superior to present desirable criteria [9]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank is beginning to slump. River control devices and embankment protection have widespread minor damage. There is minor stream bed movement evident. Debris is restricting the channel slightly. [6]
Pier/abutment protection:In place and functioning [2]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:48.5
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$64,888,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2018PoorSatisfactoryPoorFair2700048.5
September 2016PoorSatisfactoryPoorFair1642154.2
September 2014PoorSatisfactoryPoorFair3510048.5
September 2012PoorSatisfactoryPoorFair1710056.0
September 2010PoorFairPoorFair740060.4
September 2008PoorFairPoorFair740060.4
September 1998FairSatisfactoryGoodSatisfactory2728082.8
September 1996PoorPoorGoodSatisfactory1480084.2
November 1991FairSatisfactoryGoodGood1575085.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.11,3889,6851,5151880
Steel Protective Coatingsq. ft.1,9981,998000
Steel Stringerlinear ft.4,5931,9152,0935850
Steel Protective Coatingsq. ft.1,9981,998000
Deck
Reinforced Concrete Decksq. ft.40,51538,4892,02600
Wearing Surfacessq. ft.36,50034,6751,82500
Superstructure
Steel Floor Beamlinear ft.817935661580
Steel Protective Coatingsq. ft.1,9981,998000
Substructure
Reinforced Concrete Pier Walllinear ft.666233366670
Reinforced Concrete Abutmentlinear ft.1971583900
Deck
Open Grid Decksq. ft.8,93408,93400
Steel Protective Coatingsq. ft.999999000
Concrete Filled Grid Decksq. ft.19,967019,96700
Steel Protective Coatingsq. ft.999999000
Joints
Strip Seal Jointlinear ft.38126711400
Assembly with Sealeach59336020
Bearings
Movable Bearingeach92395300
Steel Protective Coatingsq. ft.1,9981,998000
Fixed Bearingeach92286400
Steel Protective Coatingsq. ft.1,9981,998000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.2,4482,2040122122
Steel Protective Coatingsq. ft.999999000