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Q STREET, N.W. over ROCK CREEK

Map

Coordinates:
+38.91100, -77.05222
38°54'40" N, 77°03'08" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:Q STREET, N.W. over ROCK CREEK
Structure number:0117
Location:Q ST. OVER ROCK CREEK
Purpose:Carries highway and pedestrian walkway over highway and waterway
Route classification:Minor Arterial (Urban) [16]
Length of largest span:57.1 ft. [17.4 m]
Total length:265.1 ft. [80.8 m]
Roadway width between curbs:33.1 ft. [10.1 m]
Deck width edge-to-edge:49.9 ft. [15.2 m]
Vertical clearance below bridge:9.8 ft. [3.0 m]
Owner:State Highway Agency [01]
Year built:1915
Year reconstructed:2000
Historic significance:Bridge is on the National Register of Historic Places [1]
Design load:MS 18 / HS 20 [5]
Number of main spans:5
Main spans material:Concrete [1]
Main spans design:Arch - Deck [11]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: June 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:10,100 [as of 2007]
Truck traffic:1% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present minimum criteria [6]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Pier/abutment protection:In place and functioning [2]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:75.7
Recommended work:Other structural work, including hydraulic replacements. [38]
Estimated cost of work:$5,000,000

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
June 2016FairGoodSatisfactoryGood1010075.7
May 2014FairGoodSatisfactoryGood1010075.7
June 2012FairSatisfactorySatisfactorySatisfactory1010075.7
December 2009FairGoodSatisfactoryGood1010073.6
January 2008GoodGoodGoodGood1230073.3
August 2005GoodVery GoodVery GoodGood1230073.3
July 2003GoodVery GoodVery GoodGood1230073.3
August 2001GoodExcellentVery GoodGood1230073.3
December 1997PoorPoorFairFair1230055.8
February 1996PoorPoorPoorFair123005.4
June 1993PoorPoorPoorFair1230036.0
September 1990PoorPoorFairFair1230052.3

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Reinforced Concrete Stringerlinear ft.705705000
Deck
Reinforced Concrete Decksq. ft.13,25012,882284840
Superstructure
Reinforced Concrete Archlinear ft.53044340470
Reinforced Concrete Floor Beamlinear ft.335335000
Substructure
Reinforced Concrete Pier Walllinear ft.7927711920
Reinforced Concrete Abutmentlinear ft.100901000
Joints
Strip Seal Jointlinear ft.9409400
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.5324963510
Steel Protective Coatingsq. ft.1,9271,88601922
Reinforced Concrete Bridge Raillinear ft.532525610