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


+38.90500, -77.07000
38°54'18" N, 77°04'12" 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: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: September 2015 

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:Equal to present minimum criteria [6]
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]
Operating rating:73.8 tons [67.1 metric tons]
Inventory rating:44.9 tons [40.8 metric tons]
Sufficiency rating:99.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
September 201599.0Not deficientGoodGoodSatisfactory31200
September 201380.0Functionally obsoleteGoodGoodSatisfactory31200
September 201180.0Functionally obsoleteGoodGoodExcellent12500
September 200980.0Functionally obsoleteGoodGoodSatisfactory12500
June 200780.0Functionally obsoleteGoodGoodGood10500
November 200580.0Not deficientVery GoodGoodGood10500
June 200380.0Not deficientVery GoodVery GoodVery Good10500
March 200180.0Not deficientExcellentVery GoodVery Good10500
March 199646.1Structurally deficientPoorPoorFair10500
March 199369.1Structurally deficientPoorSatisfactorySatisfactory10500
November 198869.1Structurally deficientPoorSatisfactorySatisfactory10500