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US40 Patapsco River Bridge

Baltimore County, Maryland, and Howard County, Maryland

Photos 

Patapsco River Rt. 40 Bridge

Photo from Md. DOT Facebook Page

Photo taken by Maryland DOT Feb. 2011

View this photo at facebook.com

BH Photo #197111

Map 

Description 

Bridge reconstructed 2014; replacement carries dual construction dates on parapet

Facts 

Overview
Concrete arch bridge over Patapsco River on US 40 in Woodlawn
Location
Ellicott City, Baltimore County, Maryland, and Howard County, Maryland
Status
Open to traffic
History
Built 1936; reconstructed using original arches 2014
Design
Open-spandrel deck arch
Dimensions
Length of largest span: 180.1 ft.
Total length: 334.0 ft.
Deck width: 49.9 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+39.29500, -76.78000   (decimal degrees)
39°17'42" N, 76°46'48" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/346503/4351024 (zone/easting/northing)
Quadrangle map:
Ellicott City
Average daily traffic (as of 2009)
37,530
Inventory number
BH 19598 (Bridgehunter.com ID)
Inspection report (as of April 2015)
Overall condition: Good
Superstructure condition rating: Very Good (8 out of 9)
Substructure condition rating: Very Good (8 out of 9)
Deck condition rating: Very Good (8 out of 9)
Sufficiency rating: 66 (out of 100)
View more at BridgeReports.com

Categories 

Arch (11,358)
Baltimore County, Maryland (81)
Built 1936 (1,041)
Built during 1930s (10,820)
County line crossing (228)
Deck arch (10,583)
Ellicott City, Maryland (9)
Functionally obsolete (8,002)
Howard County, Maryland (28)
 Maryland (680)
NR-eligible (4,025)
Open (37,487)
Owned by state (14,196)
Span length 175-250 feet (1,859)
Total length 250-500 feet (4,742)
US 40 (126)
Woodlaw, Maryland (2)

Update Log 

  • January 6, 2016: Updated by Alexander D. Mitchell IV: Reconstructed in kind and reopened 2015
  • October 29, 2013: Updated by Alexander D. Mitchell IV: Updated status: Reconstruction possibly involves replacement
  • September 15, 2013: Updated by Luke Harden: Added cities
  • April 11, 2011: New photo from Alexander D. Mitchell IV

Sources 

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Comments 

US40 Patapsco River Bridge
Posted October 30, 2013, by Nathan Holth (form3 [at] historicbridges [dot] org)

Nearly all... but not all... of the original bridge material was replaced. Some columns and the arch ribs remain. See attached presentations.

Attachment #1 (application/pdf; 4,948,945 bytes)

Attachment #2 (application/pdf; 3,783,163 bytes)

Patapsco River Bridge
Posted April 11, 2011, by Alexander D. Mitchell IV

Reconstruction to begin in May 2011, involving replacement of deck: http://www.explorehoward.com/news/82463/drivers-beware-patap...

Patapsco River Bridge
Posted September 24, 2010, by Alexander D. Mitchell IV (lner4472 [at] verizon [dot] net)

Demolition pending as of September 2010:

http://www.baltimoresun.com/features/commuting/bs-md-patapsc...