ROUTE 29 over C&O CANAL, N.W.


+38.90484, -77.07022
38°54'17" N, 77°04'13" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:ROUTE 29 over C&O CANAL, N.W.
Structure number:0032(TO KEY BR)
Purpose:Carries highway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:94.2 ft. [28.7 m]
Total length:94.2 ft. [28.7 m]
Roadway width between curbs:57.1 ft. [17.4 m]
Deck width edge-to-edge:67.9 ft. [20.7 m]
Vertical clearance below bridge:9.8 ft. [3.0 m]
Skew angle:62°
Owner:State Highway Agency [01]
Year built:1949
Year reconstructed:1998
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:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: November 2017

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:31,200 [as of 2006]
Truck traffic:2% of total traffic
Deck condition:Good [7 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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]
Scour condition:Bridge foundations (including piles) on dry land well above flood water elevations. [9]
Sufficiency rating:80.0

Previous Inspections

DateConditionDeckSuperstructureSubstructureADTSuff. Rating
November 2017FairGoodGoodSatisfactory3120080.0
September 2015FairGoodGoodSatisfactory3120099.0
September 2013FairGoodGoodSatisfactory3120080.0
September 2011GoodGoodGoodExcellent1250080.0
September 2009FairGoodGoodSatisfactory1250080.0
June 2007GoodGoodGoodGood1050080.0
November 2005GoodVery GoodGoodGood1050080.0
June 2003GoodVery GoodVery GoodVery Good1050080.0
March 2001GoodExcellentVery GoodVery Good1050080.0
March 1996PoorPoorPoorFair1050046.1
March 1993PoorPoorSatisfactorySatisfactory1050069.1
November 1988PoorPoorSatisfactorySatisfactory1050069.1

Element Data

Source: National Bridge Elements dataset, 2019 edition. This feature is experimental.
Steel Girder/Beamlinear ft.876875100
Steel Protective Coatingsq. ft.5,2565,256000
Reinforced Concrete Girder/Beamlinear ft.600592620
Reinforced Concrete Decksq. ft.6,4006,3554500
Reinforced Concrete Columneach66000
Reinforced Concrete Abutmentlinear ft.1388732190
Concrete Protective Coatingsq. ft.552552000
Strip Seal Jointlinear ft.136013600
Movable Bearingeach107300
Steel Protective Coatingsq. ft.54100
Fixed Bearingeach108200
Steel Protective Coatingsq. ft.54100
Bridge Rail
Steel or Aluminum Bridge Raillinear ft.94588280
Steel Protective Coatingsq. ft.1341230011
Reinforced Concrete Bridge Raillinear ft.2822681400
Concrete Protective Coatingsq. ft.1,944001941,750