Once per month the Daily City Photo Blog has a theme day and this month the theme is Bridges.

The photo above is of the underside of the Bowen Bridge that crosses the Derwent River between Risdon and Glenorchy.

These bloggers are also participating in the monthly theme:
Boston (MA), USA - San Diego (CA), USA - Stayton (OR), USA - New York City (NY), USA - Portland (OR), USA - Montego Bay, Jamaica - Inverness (IL), USA - Singapore, Singapore - Stockholm, Sweden - Setúbal, Portugal - Brussels, Belgium - Phoenix (AZ), USA - Seattle (WA), USA - Hyde, UK - Manila, Philippines - Fort Lauderdale (FL), USA - London, England - Austin (TX), USA - Toulouse, France - Weston (FL), USA - Sesimbra, Portugal - Selma (AL), USA - Silver Spring (MD), USA - Saarbrücken, Germany - Cleveland (OH), USA - Crystal Lake (IL), USA - American Fork (UT), USA - Seoul, South Korea - Kyoto, Japan - Tokyo, Japan - Norwich (Norfolk), UK - North Bay (ON), Canada - Arradon, France - Paderborn, Germany - Durban, South Africa - Philadelphia (PA), USA - Cypress (TX), USA - Cottage Grove (MN), USA - Prague, Czech Republic - Portland (OR), USA - Greenville (SC), USA - Boston (MA), USA - Port Angeles (WA), USA - Kuala Lumpur, Malaysia - Wichita (Ks), USA - Saint Paul (MN), USA - Petaling Jaya (Selangor), Malaysia - Grenoble, France - New York City (NY), USA - Nottingham, UK - Hobart (Tasmania), Australia - Arlington (VA), USA - Minneapolis (MN), USA - Miami (FL), USA - Cheltenham, UK - Albuquerque (NM), USA - Saratoga Spgs. (NY), USA - Las Vegas (NV), USA - Tuzla, Bosnia and Herzegovina - Nashville (TN), USA - Toru?, Poland - New Orleans (LA), USA - Port Elizabeth, South Africa - Melbourne, Australia - Moscow, Russia - Trujillo, Peru - Château-Gontier, France - Quincy (MA), USA - Melbourne, Australia - Port Vila, Vanuatu - Joplin (MO), USA - Bellefonte (PA), USA - Brookville (OH), USA - Chateaubriant, France - Chandler (AZ), USA - Stavanger, Norway - Baziège, France - Auckland, New Zealand - Wellington, New Zealand - Ocean Township (NJ), USA - Subang Jaya (Selangor), Malaysia - Detroit (MI), USA - Riga, Latvia - Nelson, New Zealand - Budapest, Hungary - Cape Town, South Africa - Sydney, Australia - Dunedin (FL), USA - Sofia, Bulgaria - Radonvilliers, France - Turin, Italy - Montpellier, France - Kansas City (MO), USA - Minneapolis (MN), USA - Haninge, Sweden - Wailea (HI), USA - Lubbock (TX), USA - Rabaul, Papua New Guinea - Terrell (TX), USA - Mexico City, Mexico - Saint-Petersburg, Russian Federation - Budapest, Hungary - Montréal (QC), Canada - Sharon (CT), USA - Le Guilvinec, France - Jefferson City (MO), USA - Saigon, Vietnam - London, UK - Crepy-en-Valois, France - Orlando (FL), USA - Maple Ridge (BC), Canada - Paris, France - Mainz, Germany - Newcastle (NSW), Australia - Wassenaar (ZH), Netherlands - Menton, France - Monte Carlo, Monaco - Darmstadt, Germany - Naples (FL), USA - Torino, Italy - Saint Louis (MO), USA - Bogor, Indonesia - The Hague, Netherlands - Minneapolis (MN), USA - Anderson (SC), USA - Melbourne (VIC), Australia - West Sacramento (CA), USA - Christchurch, New Zealand