MD 471 over ST. MARY'S RIVER


+38.25072, -76.50764
38°15'03" N, 76°30'28" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:MD 471 over ST. MARY'S RIVER
Structure number:100000180028020
Location:1.01 MILES NORTH OF MD 5
Purpose:Carries highway over waterway
Route classification:Collector (Urban) [17]
Length of largest span:15.1 ft. [4.6 m]
Total length:63.0 ft. [19.2 m]
Roadway width between curbs:29.9 ft. [9.1 m]
Deck width edge-to-edge:33.1 ft. [10.1 m]
Owner:State Highway Agency [01]
Year built:1990
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Main span material:Concrete [1]
Main span design:Culvert [19]
Deck type:Not applicable [N]

Latest Available Inspection: November 2018

Good/Fair/Poor Condition:Good
Status:Open, no restriction [A]
Average daily traffic:4,242 [as of 2009]
Truck traffic:8% of total traffic
Structural appraisal:Better than present minimum criteria [7]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Better than present minimum criteria [7]
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:None present but re-evaluation suggested [5]
Culvert condition:Shrinkage cracks, light scaling and insignificant spalling which does not expose reinforcing steel. Insignificant damage caused by drift with no misalignment and not requiring corrective action. Some minor scouring has occured near curtain walls, wingwalls or pipes. Metal culverts have a smooth symmetrical curvature with superficial corrosion and no pitting. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Sufficiency rating:79.0

Previous Inspections

DateConditionCulvert ConditionADTSuff. Rating
November 2018Good7 out of 10424279.0
November 2016Good7 out of 10424279.0
August 2014Good7 out of 10424279.0
June 2012Good7 out of 10424279.0
June 2010Good7 out of 10424279.0
May 2008Good7 out of 10421279.1
April 2006Good7 out of 10395079.3
May 2004Good7 out of 10395079.3
May 2002Good7 out of 10175093.9
May 2000Good7 out of 10175093.9
May 1998Good7 out of 10175093.9
May 1996Good7 out of 10130094.2
April 1994Good7 out of 10130094.2
December 1991Good8 out of 10130094.2