M Street, N.W. over D.C. Convention Center


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:M Street, N.W. over D.C. Convention Center
Structure number:0251
Location:M Street, N.W.
Route classification:Collector (Urban) [17]
Total length:386.2 ft. [117.7 m]
Roadway width between curbs:62.0 ft. [18.9 m]
Deck width edge-to-edge:63.0 ft. [19.2 m]
Vertical clearance above deck:25.9 ft. [7.9 m]
Vertical clearance below bridge:15.1 ft. [4.6 m]
Owner:State Highway Agency [01]
Year built:2005
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:6
Main spans material:Steel continuous [4]
Main spans design:Girder and floorbeam system [03]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]

Latest Available Inspection: March 2015

Good/Fair/Poor Condition:Fair
Status:Open, no restriction [A]
Average daily traffic:8,500 [as of 2008]
Truck traffic:1% of total traffic
Deck condition:Satisfactory [6 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]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:77.9 tons [70.8 metric tons]
Inventory rating:45.9 tons [41.7 metric tons]
Sufficiency rating:80.5

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
March 201580.5FairSatisfactoryGoodSatisfactoryFO8500
March 201380.5FairSatisfactoryGoodSatisfactory-8500
March 201180.5FairGoodGoodSatisfactory-8500
February 200992.5GoodGoodGoodGood--
January 200737.5GoodVery GoodExcellentExcellent--
November 200537.5GoodExcellentExcellentExcellent--

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Girder/Beamlinear ft.4,2414,241000
Steel Protective Coatingsq. ft.22000
Reinforced Concrete Decksq. ft.34,44034,440000
Steel Floor Beamlinear ft.526526000
Steel Columneach1414000
Steel Protective Coatingsq. ft.11000
Reinforced Concrete Pier Walllinear ft.180180000
Reinforced Concrete Abutmentlinear ft.9090000
Compression Jointlinear ft.327161913342
Open Jointlinear ft.770761900
Elastomeric Bearingeach6666000
Fixed Bearingeach1111000
Steel Protective Coatingsq. ft.11000