29TH STREET, N.W. over C&O CANAL
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: | 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
Date | Suff. Rating | Condition | Deck | Superstructure | Substructure | SD/FO | ADT |
---|
November 2016 | 79.9 | Good | Good | Very Good | Very Good | - | 1000 |
November 2014 | 79.9 | Good | Very Good | Very Good | Very Good | - | 1000 |
December 2012 | 82.9 | Good | Good | Good | Good | - | 1000 |
March 2010 | 23.6 | Poor | Serious | Poor | Fair | - | 1000 |
May 2008 | 25.1 | Poor | Serious | Poor | Fair | - | 500 |
June 2006 | 27.2 | Poor | Poor | Poor | Fair | - | 500 |
June 2004 | 27.2 | Poor | Poor | Poor | Fair | - | 500 |
August 2002 | 42.3 | Poor | Poor | Fair | Fair | - | 500 |
June 2000 | 42.3 | Poor | Poor | Fair | Fair | - | 500 |
April 1998 | 42.3 | Poor | Poor | Fair | Fair | - | 500 |
October 1996 | 42.1 | Poor | Poor | Fair | Fair | - | 500 |
April 1994 | 41.9 | Poor | Poor | Fair | Fair | - | 500 |
September 1992 | 41.9 | Poor | Poor | Fair | Fair | - | 500 |
February 1990 | 41.9 | Poor | Poor | Fair | Fair | - | 500 |
Element Data
Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
Element | Units | Quantity | 1. Good | 2. Fair | 3. Poor | 4. Serious |
---|
Superstructure |
Steel Girder/Beam | linear ft. | 346 | 346 | 0 | 0 | 0 |
Steel Protective Coating | sq. ft. | 1,844 | 1,844 | 0 | 0 | 0 |
Deck |
Reinforced Concrete Deck | sq. ft. | 1,271 | 1,271 | 0 | 0 | 0 |
Wearing Surfaces | sq. ft. | 1,271 | 1,271 | 0 | 0 | 0 |
Substructure |
Reinforced Concrete Abutment | linear ft. | 65 | 65 | 0 | 0 | 0 |
Joints |
Other Joint | linear ft. | 64 | 64 | 0 | 0 | 0 |
Bearings |
Movable Bearing | each | 9 | 9 | 0 | 0 | 0 |
Steel Protective Coating | sq. ft. | 10,753 | 10,753 | 0 | 0 | 0 |
Fixed Bearing | each | 9 | 9 | 0 | 0 | 0 |
Steel Protective Coating | sq. ft. | 10,753 | 10,753 | 0 | 0 | 0 |
Bridge Rail |
Steel or Aluminum Bridge Rail | linear ft. | 82 | 82 | 0 | 0 | 0 |
Steel Protective Coating | sq. ft. | 611 | 611 | 0 | 0 | 0 |