Share:

29TH STREET, N.W. over C&O CANAL

Map

Coordinates:
+38.90396, -77.05808
38°54'14" N, 77°03'29" W

Facts

Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:29TH STREET, N.W. over C&O CANAL
Structure number:0006
Location:GEORGETOWN & C&O
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Local (Urban) [19]
Length of largest span:3.6 ft. [1.1 m]
Total length:3.6 ft. [1.1 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:32.2 ft. [9.8 m]
Owner:State Highway Agency [01]
Year reconstructed:2013
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:Stringer/Multi-beam or girder [02]
Deck type:Other [9]
Wearing surface:Bituminous [6]

Latest Available Inspection: November 2016

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:1,000 [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:Very Good [8 out of 9]
Structural appraisal:Equal to present desirable criteria [8]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
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:Navigation protection not required [1]
Scour condition:Bridge foundations (including piles) on dry land well above flood water elevations. [9]
Sufficiency rating:79.9

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2016GoodGoodVery GoodVery Good100079.9
November 2014GoodVery GoodVery GoodVery Good100079.9
December 2012GoodGoodGoodGood100082.9
March 2010PoorSeriousPoorFair100023.6
May 2008PoorSeriousPoorFair50025.1
June 2006PoorPoorPoorFair50027.2
June 2004PoorPoorPoorFair50027.2
August 2002PoorPoorFairFair50042.3
June 2000PoorPoorFairFair50042.3
April 1998PoorPoorFairFair50042.3
October 1996PoorPoorFairFair50042.1
April 1994PoorPoorFairFair50041.9
September 1992PoorPoorFairFair50041.9
February 1990PoorPoorFairFair50041.9

Element Data

Source: National Bridge Elements dataset, 2018 edition. This feature is experimental.
ElementUnitsQuantity1-Good2-Fair3-Poor4-Serious
Superstructure
Steel Girder/Beamlinear ft.346346000
Steel Protective Coatingsq. ft.1,8441,844000
Substructure
Reinforced Concrete Abutmentlinear ft.6565000
Bearings
Movable Bearingeach99000
Steel Protective Coatingsq. ft.10,75310,753000
Fixed Bearingeach99000
Steel Protective Coatingsq. ft.10,75310,753000
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.8282000
Steel Protective Coatingsq. ft.611611000
Deck
Other Material Decksq. ft.1,2711,271000
Wearing Surfacessq. ft.984984000