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CHAIN BRIDGE over POTOMAC R. & C&O

Map

Coordinates:
+38.92976, -77.11603
38°55'47" N, 77°06'58" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts

Name:CHAIN BRIDGE over POTOMAC R. & C&O
Structure number:0001
Location:OVER POTOMAC RIVER, N.W.
Purpose:Carries highway and pedestrian walkway over waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:171.9 ft. [52.4 m]
Total length:1382.9 ft. [421.5 m]
Roadway width between curbs:35.1 ft. [10.7 m]
Deck width edge-to-edge:44.6 ft. [13.6 m]
Vertical clearance below bridge:99.1 ft. [30.2 m]
Owner:State Highway Agency [01]
Year built:1937
Year reconstructed:1983
Historic significance:Bridge is possibly eligible for the National Register of Historic Places [3]
Design load:MS 18 / HS 20 [5]
Number of main spans:8
Main spans material:Steel continuous [4]
Main spans design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Latex Concrete or similar additive [3]

Latest Available Inspection: February 2016

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:21,800 [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:Basically intolerable requiring high priority of replacement [2]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present minimum criteria [6]
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]
Pier/abutment protection:Navigation protection not required [1]
Scour condition:Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Operating rating:61.8 tons [56.2 metric tons]
Inventory rating:37.0 tons [33.6 metric tons]
Sufficiency rating:66.0

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
February 201666.0FairGoodGoodSatisfactoryFO21800
December 201366.0FairGoodGoodSatisfactoryFO21800
December 201165.0FairGoodSatisfactorySatisfactoryFO21800
January 201065.0FairGoodSatisfactorySatisfactoryFO21800
October 200754.0FairGoodSatisfactoryFairFO21800
June 200666.0FairGoodSatisfactorySatisfactoryFO25400
May 200564.0FairGoodSatisfactorySatisfactoryFO25400
September 200464.0FairGoodSatisfactorySatisfactoryFO25400
March 200364.0FairGoodSatisfactoryGoodFO25400
July 199965.0GoodGoodGoodGoodFO25400
April 199765.0GoodGoodGoodGoodFO25400
December 199465.0GoodGoodGoodGoodFO25400
December 199265.0GoodGoodGoodGoodFO25400
April 199065.0GoodGoodGoodGood-25400