Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:29TH STREET, N.W. over C&O CANAL
Structure number:0006
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Local (Urban) [19]
Length of largest span:36.1 ft. [11.0 m]
Total length:36.1 ft. [11.0 m]
Roadway width between curbs:24.0 ft. [7.3 m]
Deck width edge-to-edge:32.2 ft. [9.8 m]
Vertical clearance below bridge:9.8 ft. [3.0 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]
Operating rating:44.9 tons [40.8 metric tons]
Inventory rating:36.0 tons [32.7 metric tons]
Sufficiency rating:79.9

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
November 201679.9GoodGoodVery GoodVery Good-1000
November 201479.9GoodVery GoodVery GoodVery Good-1000
December 201282.9GoodGoodGoodGood-1000
March 201023.6PoorSeriousPoorFair-1000
May 200825.1PoorSeriousPoorFair-500
June 200627.2PoorPoorPoorFair-500
June 200427.2PoorPoorPoorFair-500
August 200242.3PoorPoorFairFair-500
June 200042.3PoorPoorFairFair-500
April 199842.3PoorPoorFairFair-500
October 199642.1PoorPoorFairFair-500
April 199441.9PoorPoorFairFair-500
September 199241.9PoorPoorFairFair-500
February 199041.9PoorPoorFairFair-500

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.346346000
Steel Protective Coatingsq. ft.1,8441,844000
Reinforced Concrete Decksq. ft.1,2711,271000
Wearing Surfacessq. ft.1,2711,271000
Reinforced Concrete Abutmentlinear ft.6565000
Other Jointlinear ft.6464000
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