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29TH STREET, N.W. over C&O CANAL

Washington, District of Columbia

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

© Copyright 2012-18, James Baughn
Disclaimer: All data is taken from the National Bridge Inventory and has not been verified.
This page's URL is http://bridgereports.com/1076554