2 votes

Time Line Bridge (Piney Creek Bridge)


A hidden jewel, not visible from the road, but a magnificantly renovated, sculptured open spandrel (2 straight spandrel ribs) concrete arch, high over Piney Creek.

Photo taken by Calvin Sneed in June 2010


BH Photo #167481

Street View 


Concrete open spandrel deck arch bridge (3 spandrel ribs) over Piney Creek on U.S. 70
Cumberland County, Tennessee, and Roane County, Tennessee
Open to traffic
Built 1929-31; rehabilitated 1978
- Tennessee Highway Department
3 ribbed open-spandrel concrete deck arch, standard spindle railing was removed when renovated.
Length of largest span: 178.1 ft.
Total length: 350.0 ft.
Deck width: 32.1 ft.
Also called
Time Line Bridge (original name given to it because it's on the Eastern-Central Standard Time Zone boundary)
Piney Creek Bridge (name given to it in the 1950's)
Ray R. Baird Memorial Bridge
Approximate latitude, longitude
+35.85396, -84.73782   (decimal degrees)
35°51'14" N, 84°44'16" W   (degrees°minutes'seconds")
Approximate UTM coordinates
16/704277/3970113 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2017)
Inventory numbers
TN 18SR0010017 (Tennessee bridge number)
BH 32473 (Bridgehunter.com ID)
Inspection report (as of February 2018)
Overall condition: Fair
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 92.6 (out of 100)
View more at BridgeReports.com

Update Log 

  • November 14, 2013: New photos from Shane Passmore
  • April 10, 2011: Updated by Anthony Dillon: Changed from 2 to 3 rib design
  • June 14, 2010: New photos from Calvin Sneed


  • Tony Dillon - spansaver [at] hotmail [dot] com
  • Calvin Sneed - us43137415 [at] yahoo [dot] com
  • Shane Passmore - aa5te [dot] kb5ehr [at] gmail [dot] com


Time Line Bridge (Piney Creek Bridge)
Posted February 17, 2012, by Calvin Sneed (us43137415 [at] yahoo [dot] com)

Thanks for fixing that, Michael!

Time Line Bridge (Piney Creek Bridge)
Posted April 10, 2011, by Michael Goff (michael [dot] goff [at] odot [dot] state [dot] or [dot] us)

I guess I can respond, since I was raised on McCullough arches and have been expanding my truss knowledge since joining you folks in 2005. 3 rib open spandrel deck arch, for sure.

Time Line Bridge (Piney Creek Bridge)
Posted April 9, 2011, by Anthony Dillon (spansaver [at] hotmail [dot] com)

A real gem!.......hidden under the ruse of the ugly replacement railing.

Being raised on trusses and with limited knowledge of concrete arches leads me to ask...... Would this not be considered a 3-ribbed open-spandrel arch?

Time Line Bridge (Piney Creek Bridge)
Posted April 9, 2011, by Jim Grey (mobilene [at] gmail [dot] com)

I was on vacation in this part of TN last week and drove right over this bridge. Sure wish I'd checked here first, so I would have known to pull over and find a place to climb down the bank so I could see this for myself!!

Piney Creek Bridge
Posted June 14, 2010, by Calvin Sneed (us43137415 [at] yahoo [dot] com)

I have driven or ridden over this bridge for the past 50 years, and had no idea how elegant the structure is just below the railing. Very impressed with the '78 renovations, too...the sculptured lines of the spandrels are very elegant. Obviously, too deep for support piers, unlike the railroad bridge beside it. It is a hidden jewel, unseen as you approach and cross it. Well worth the trip (and the mosquito bites) to see it.