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

Washington, District of Columbia

Map

Coordinates:
+38.90396, -77.05808
38°54'14" N, 77°03'29" W

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: October 2018

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]`
Sufficiency rating:	82.9

Previous Inspections

Date	Condition	Deck	Superstructure	Substructure	ADT	Suff. Rating
October 2018	Good	Good	Very Good	Very Good	1000	82.9
November 2016	Good	Good	Very Good	Very Good	1000	79.9
November 2014	Good	Very Good	Very Good	Very Good	1000	79.9
December 2012	Good	Good	Good	Good	1000	82.9
March 2010	Poor	Serious	Poor	Fair	1000	23.6
May 2008	Poor	Serious	Poor	Fair	500	25.1
June 2006	Poor	Poor	Poor	Fair	500	27.2
June 2004	Poor	Poor	Poor	Fair	500	27.2
August 2002	Poor	Poor	Fair	Fair	500	42.3
June 2000	Poor	Poor	Fair	Fair	500	42.3
April 1998	Poor	Poor	Fair	Fair	500	42.3
October 1996	Poor	Poor	Fair	Fair	500	42.1
April 1994	Poor	Poor	Fair	Fair	500	41.9
September 1992	Poor	Poor	Fair	Fair	500	41.9
February 1990	Poor	Poor	Fair	Fair	500	41.9

Element Data

Source: National Bridge Elements dataset, 2019 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
Substructure
Reinforced Concrete Abutment	linear ft.	65	65	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
Deck
Other Material Deck	sq. ft.	1,271	1,271	0	0	0
Wearing Surfaces	sq. ft.	984	984	0	0	0

© Copyright 2012-20, 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