Aqueducts
Aquae Urbis Romae - The Waters of the City of Rome, Aqueduct, Aqueducts of Rome Under Augustus, Chirk and Pontcysyllte Aqueducts, Frontinus on The Aqueducts of Rome, Pont Du Gard, Roman Aqueduct from Mons to Frejus, Roman Aqueducts, Roman Aqueducts Today, Roman Monographies - Aqueducts
Asia
Gokkteik Bridge, Lugou Qiao - Marco Polo Bridge, Museum of Ancient Bridges, The Bridges in Shanghai
Covered
A Guide to Oregon Covered Bridges, Ashtabula County Ohio Covered Bridge Festival, Back in Time: Ohio's Vanishing Covered Bridge, Bennington County Covered Bridges, Bowser's Covered Bridge Restoration Project, Bridges of Lucerne, Bridges to the Past: Alabama's Covered Bridge, Columbia County Covered Bridges, Cottage Grove's Covered Bridges, Covered Bridges
Europe
Italy, United Kingdom, Amsterdam - City of Bridges, Bridges of Dublin, Bridges of Paris, Die Krämerbrücke, Kenmare Suspension Bridge, Old Bridge of Mostar, The Bridges of Porto, The Stone Bridge over the Vardar River, Skopje
Oceania
Sydney Harbour Bridge, Bridge Construction in Australia, Bridging the Gap - Early Bridges in New Zealand 18, Building Bridges for the Great North Road, Lennox Bridge - Lapstone Hill - Blue Mountains, Mitchell's Bridge - Victoria Pass, Mount Morgan Suspension Bridges, New Zealand Railway Bridges, Red Bridge
A Span For All Seasons
David Denenberg provides photographs of bridges and a large inventory of suspension bridges.
Bridge Building - Art and Science
Derek Locke's detailed, illustrated history of bridges across the world, with diagrammatic explanations of the basic types of bridges, examples and many links.
Bridges
Great Buildings Online provides images and information on a selection of famous bridges world-wide.
Bridges of the World
Photographs and histories from Glass, Steel and Stone of famous bridges historic and modern.
Digital Bridges
Online library of historical bridge design manuals and books from Lehigh University.
Historic Bridge Foundation
Advocates for the preservation of historic bridges. Includes Texas and New Mexico bridges.
Living Bridges
Illustrated review by Yoshitaka Mouri in Art Watch of the Royal Academy of Arts exhibition on inhabited bridges, including historical examples and past utopian bridge plans.
Pons
Article fom Smith's Dictionary of Greek and Roman Antiquities 1875. Illustrated with the original woodcuts.