An anonymous reader quotes a report from Ars Technica: If the U.S. adopts a "dig once" policy, construction workers would install conduits just about any time they build new roads and sidewalks or upgrade existing ones. These conduits are plastic pipes that can house fiber cables. The conduits might be empty when installed, but their presence makes it a lot cheaper and easier to install fiber later, after the road construction is finished. The idea is an old one. U.S. Rep. Anna Eshoo (D-Calif.) has been proposing dig once legislation since 2009, and it has widespread support from broadband-focused consumer advocacy groups. It has never made it all the way through Congress, but it has bipartisan backing from lawmakers who often disagree on the most controversial broadband policy questions, such as net neutrality and municipal broadband. It even got a boost from Rep. Marsha Blackburn (R-Tenn.), who has frequently clashed with Democrats and consumer advocacy groups over broadband -- her "Internet Freedom Act" would wipe out the Federal Communications Commission's net neutrality rules, and she supports state laws that restrict growth of municipal broadband. Blackburn, chair of the House Communications and Technology Subcommittee, put Eshoo's dig once legislation on the agenda for a hearing she held yesterday on broadband deployment and infrastructure. Blackburn's opening statement (PDF) said that dig once is among the policies she's considering to "facilitate the deployment of communications infrastructure." But her statement did not specifically endorse Eshoo's dig once proposal, which was presented only as a discussion draft with no vote scheduled. The subcommittee also considered a discussion draft that would "creat[e] an inventory of federal assets that can be used to attach or install broadband infrastructure." Dig once legislation received specific support from Commerce Committee Chairman Greg Walden (R-Ore.), who said that he is "glad to see Ms. Eshoo's 'Dig Once' bill has made a return this Congress. I think that this is smart policy and will help spur broadband deployment across the country."