3 votes

US40 Patapsco River Bridge


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


Street View 


Bridge reconstructed 2014; replacement carries dual construction dates on parapet


Concrete arch bridge over Patapsco River on US 40 in Woodlawn
Ellicott City, Baltimore County, Maryland, and Howard County, Maryland
Open to traffic
Built 1936; reconstructed using original arches 2014
Open-spandrel deck arch
Length of largest span: 180.1 ft.
Total length: 334.0 ft.
Deck width: 49.9 ft.
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)
Inventory number
BH 19598 (Bridgehunter.com ID)
Inspection report (as of April 2017)
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

Update Log 

  • November 3, 2018: Photo imported by Alexander D. Mitchell IV
  • May 29, 2018: New Street View added by Luke
  • 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



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: