Hikes in vehicle-related fees would round out the plan, which also devotes a slice of sales tax revenues to mass transit.
As much as all that makes sense, the fuel-tax proposal could collide head-on with Corbett's pledge of allegiance to the no-tax crowd.
Since Corbett hopped aboard the tea-party bus, he has had to slash state spending in key areas of education and social services. Notably, his first budget steered completely around one massive pothole: the $470 million gap in transportation and transit funding left by the state's failure to move forward on a smart plan to toll I-80.
Schoch's panel may be on to a worthwhile approach - one that could well be a work-around for the governor's no-tax stance. Corbett already has accepted the notion of fee increases to meet other needs. And lifting a cap on the wholesale fuels tax still falls short of a direct hike in the retail gas tax.
Certainly, it's the right move to lean more heavily on broad-based revenue sources so that all highway users share in the cost of maintaining roads. More importantly, the state must attack a backlog of unsafe bridges that is the nation's largest. Transit needs were well-documented by federal transit administrator Peter Rogoff's recent tour of crumbling SEPTA facilities, during which he found huge flakes of rusted steel peeling off a crucial rail bridge girder.
The most straightforward strategy to maintain this crucial infrastructure would be to add a few cents to the retail tax on gasoline. The increase would hardly be noticeable amid normal fluctuations in gasoline prices, but it's still off the table for Corbett and a consistent majority in the Republican-run state legislature.
Given the political climate, Corbett's advisory panel has given Harrisburg lawmakers a good set of tools to make repairs to the state's transportation fund.
In addition, lawmakers and the governor should resurrect the lucrative plan to toll I-80. Local trips on the interstate could still be toll-free, but long-haul I-80 users finally would shoulder their share of transportation costs. Those statewide needs now are met heavily by Pennsylvania Turnpike users in this region - a toll structure that also disadvantages the Philadelphia ports over those in New York.