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M STREET, N.W. over PARKWAY & ROCK CREEK

Map

Coordinates:
+38.90526, -77.05586
38°54'19" N, 77°03'21" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:M STREET, N.W. over PARKWAY & ROCK CREEK
Structure number:0035
Location:M ST. OVER PARKWAY N.W.
Purpose:Carries highway and pedestrian walkway over highway and waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:78.1 ft. [23.8 m]
Total length:232.0 ft. [70.7 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:59.1 ft. [18.0 m]
Vertical clearance below bridge:13.1 ft. [4.0 m]
Skew angle:25°
Owner:State Highway Agency [01]
Year built:1928
Year reconstructed:1999
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
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:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: September 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:10,800 [as of 2007]
Truck traffic:1% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Very Good [8 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Sufficiency rating:81.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
September 2016GoodGoodVery GoodGood1080081.0
September 2014GoodGoodVery GoodGood1080079.0
September 2012FairSatisfactoryGoodSatisfactory1080079.0
October 2010FairSatisfactoryGoodGood1080079.0
October 2008GoodGoodVery GoodGood1080079.0
October 2006GoodVery GoodVery GoodGood2230079.0
October 2004GoodGoodVery GoodGood2230079.0
December 2003GoodGoodVery GoodGood2230079.0
December 2002GoodVery GoodVery GoodGood2230079.0
January 2001GoodExcellentVery GoodVery Good2230079.0
May 1999GoodExcellentVery GoodVery Good2230059.2
May 1994PoorSeriousSeriousPoor2230029.1
February 1992PoorSeriousSeriousPoor2230029.1
March 1990PoorSeriousPoorPoor2230046.1

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.1,3921,392000
Steel Protective Coatingsq. ft.16,40016,400000
Deck
Reinforced Concrete Decksq. ft.14,22014,216040
Substructure
Reinforced Concrete Pier Walllinear ft.141130560
Reinforced Concrete Abutmentlinear ft.1411202100
Reinforced Concrete Pier Caplinear ft.141141000
Joints
Compression Jointlinear ft.141071700
Bearings
Movable Bearingeach1817100
Steel Protective Coatingsq. ft.2525000
Fixed Bearingeach66000
Steel Protective Coatingsq. ft.2524100
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.470470000
Steel Protective Coatingsq. ft.1,7231,723000
Reinforced Concrete Bridge Raillinear ft.470470000