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M STREET, N.W. over PARKWAY & ROCK CREEK

Source: National Bridge Inventory
Information not verified. Use at your own risk.

Facts 

Name:M STREET, N.W. over PARKWAY & ROCK CREEK
Structure number:0035
Location:M ST. OVER PARKWAY N.W.
Purpose:Carries highway and pedestrian walkway over highway and waterway
Route classification:Other Principal Arterial (Urban) [14]
Length of largest span:78.1 ft. [23.8 m]
Total length:232.0 ft. [70.7 m]
Roadway width between curbs:40.0 ft. [12.2 m]
Deck width edge-to-edge:59.1 ft. [18.0 m]
Vertical clearance below bridge:16.1 ft. [4.9 m]
Skew angle:25°
Owner:State Highway Agency [01]
Year built:1928
Year reconstructed:1999
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:3
Main spans material:Steel [3]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: September 2014 

Status:Open, no restriction [A]
Average daily traffic:10,800 [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:Good [7 out of 9]
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Basically intolerable requiring high priority of replacement [2]
Underclearances appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Superior to present desirable criteria [9]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Banks are protected or well vegetated. River control devices such as spur dikes and embankment protection are not required or are in a stable condition. [8]
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:65.9 tons [59.9 metric tons]
Inventory rating:38.9 tons [35.4 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:79.0

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
September 201479.0Functionally obsoleteGoodVery GoodGood10800
September 201279.0Functionally obsoleteSatisfactoryGoodSatisfactory10800
October 201079.0Functionally obsoleteSatisfactoryGoodGood10800
October 200879.0Functionally obsoleteGoodVery GoodGood10800
October 200679.0Not deficientVery GoodVery GoodGood22300
October 200479.0Not deficientGoodVery GoodGood22300
December 200379.0Not deficientGoodVery GoodGood22300
December 200279.0Not deficientVery GoodVery GoodGood22300
January 200179.0Not deficientExcellentVery GoodVery Good22300
May 199959.2Not deficientExcellentVery GoodVery Good22300
May 199429.1Structurally deficientSeriousSeriousPoor22300
February 199229.1Structurally deficientSeriousSeriousPoor22300
March 199046.1Structurally deficientSeriousPoorPoor22300