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:24.3 ft. [7.4 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:Epoxy Overlay [5]

Latest Available Inspection: November 2014 

Status:Open, no restriction [A]
Average daily traffic:1,000 [as of 2007]
Truck traffic:1% of total traffic
Deck condition:Very Good [8 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. ratingEvaluationDeckSuper.Sub.ADT
November 201479.9Not deficientVery GoodVery GoodVery Good1000
December 201282.9Not deficientGoodGoodGood1000
March 201023.6Not applicableSeriousPoorFair1000
May 200825.1Not applicableSeriousPoorFair500
June 200627.2Not applicablePoorPoorFair500
June 200427.2Not applicablePoorPoorFair500
August 200242.3Not applicablePoorFairFair500
June 200042.3Not applicablePoorFairFair500
April 199842.3Not applicablePoorFairFair500
October 199642.1Not applicablePoorFairFair500
April 199441.9Not applicablePoorFairFair500
September 199241.9Not applicablePoorFairFair500
February 199041.9Not applicablePoorFairFair500