6 votes

Gregory Boulevard Bridge


From the NE corner

Photo taken by Clark Vance in December 2011


BH Photo #222354

Street View 


The railroads under this bridge were shown as the MoPac and the Frisco in 1934. The Frisco line originally carried the Kansas City Southern until 1929 when they moved the alignment east along Blue Ridge. The Frisco line has been abandoned and the Union Pacific now owns the MoPac.


Open spandrel multi-span concrete deck arch bridge over Big Blue River on Gregory Blvd.
Jackson County, Missouri
Open to traffic
Built 1917; Superstructure replaced 1984
- C.E. Allen (Resident Engineer)
- Horton Concrete Construction Co. (Contractor)
- Waddell & Son of Kansas City, Missouri (Consulting Engineers)
Multiple (5+) spans based on photo in library collection
Length of largest span: 140.0 ft.
Total length: 700.0 ft.
Deck width: 43.9 ft.
Approximate latitude, longitude
+38.99690, -94.52946   (decimal degrees)
38°59'49" N, 94°31'46" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/367552/4317544 (zone/easting/northing)
Quadrangle map:
Land survey
T. 48 N., R. 33 W., Sec. 11
Average daily traffic (as of 2018)
Inventory numbers
MoDOT S-121B21 (Missouri Dept. of Transportation bridge number)
MONBI 25478 (Missouri bridge number on the National Bridge Inventory)
BH 21696 (Bridgehunter.com ID)
Inspection report (as of March 2018)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 30.7 (out of 100)
View more at BridgeReports.com

Update Log 

  • February 8, 2020: New photo from Geoff Hubbs
  • March 21, 2012: Updated by Clark Vance: Adjusted category names
  • December 23, 2011: Updated by Clark Vance: Added engineer and builder info from plaques
  • November 14, 2011: Updated by Clark Vance: Elaborated on arch type
  • January 19, 2011: New Street View added by Sheldon Wiens



Gregory Boulevard Bridge
Posted February 7, 2020, by Clark Vance (cvance [at] dogmail [dot] com)

From "The Excavating Engineer" January 1917 via google books:

The Board of Park Commissioners of Kansas City has awarded the contract for the construction of the 71st Street bridge over the Blue River in Swope Park to the Horton Concrete Construction Company of Kansas City at $144,943 This is to be of reinforced concrete The total length of the concrete structure will be 700 and the earth fill about 280 feet This calls for about 10,300 cubic yards of concrete 6,400 cubic yards of excavation for pier bases and abutments and 4000 cubic yards of earth embankment The other bidders were as follows Concrete Construction Co List Gifford Construction Co Winston Bros Co McMillon Construction Co Petterson Norton Co Gray Construction Co The Missouri Valley Building and Iron Co The Midland Bridge Co The Union Building & Construction Co

Waddell & Son consulting engineers of Kansas City who designed the bridge will supervise the construction

Gregory Boulevard Bridge
Posted December 24, 2019, by Clark Vance (cvance [at] dogmail [dot] com)
Gregory Blvd. Bridge
Posted January 20, 2011, by David Backlin (us71 [at] cox [dot] net)


Switch to Bird's Eye View for a nice shot of this bridge. I'll be up that way this Summer, so I'll try to remember to look for it.

Gregory Blvd. Bridge
Posted January 20, 2011, by Nathan Holth (form3 [at] historicbridges [dot] org)

This is a large and impressive open spandrel arch according to Bing maps, but I can't find good photos online anywhere.

Gregory Blvd. Bridge
Posted January 19, 2011, by Robert Thompson

Great catch! Keep them coming!