There's plenty: The us army corps of engineers has been working on waterways for a very very long time. Their projects allow huge swaths of rivers stay navigab

There's plenty: The us army corps of engineers has been working on waterways for a very very long time. Their projects allow huge swaths of rivers stay navigable, provide irrigation and/or flood control, and so on. There are huge swathes of farmland that are able to provide a stable and steady supply of food as a result of htis effort. TVA and Bonneville are government infrastructure programs that provide millions of people with hydroelectric power, and broader grid stability as a result of the infrastucrue they put in. Not to mention rural electrification via special welfare programs for farmers - the tax for that is listed as a line item in your electric bill. The telecom system (including the Internet) is the result of government investment - in the form of: special taxes that city folk pay for rural folks access, research investment, direct research in various agencies, investment in cables being installed (for example - billions in grants were given to AT&T, verizon, et al to upgrade trunk and last mile lines to fiber), foreign policy to allow open communications and standards, and adoption by the military and other large agencies. A whole bunch more too in the form of setting standards and providing grants to state and local governments to meet those standards (education, water and sewage systems, rail infrastructure, farm subsidies, crop and flood insurance, and so on) - some of these are more infrastructury than others, but included because (e.g.) having stable farms leads food security and therefore social stability and is kinda necessary for the rest to matter.