Biden's DOT nominee is certain to be confirmed, Commerce Committee's top Republican says.

President-elect says “Build Back Better” plan will have “historic investments in infrastructure.”

Proponents include construction, labor, transportation, environmental, and clean-energy groups.

Industry observers still think major legislation will require some Republican support.

$10-billion allocation can go for payroll, operations, maintenance, but construction projects are eligible too.

Bipartisan bill extends renewables tax credits, but without prevailing wage provisions; energy and business groups support the legislation.

$1.4-trillion measure has mostly small boosts or cutbacks for construction accounts in 2021.