noun
rush construction; construction at top speed
Refers to construction work done in a hurry, often to meet a tight deadline. Can imply a rushed, possibly lower-quality job.
開店に間に合わせるため、突貫工事が行われた。
Rush construction was carried out to make it in time for the store opening.
突貫工事で建てた家は、後で問題が出ることがある。
Houses built with rush construction can develop problems later.
突貫 alone means 'rush' or 'charge', and is used in compounds like 突貫作業 (rush work). 突貫工事 specifically refers to rushed construction.
Compound of 突貫 (とっかん, 'rush, charge') and 工事 (こうじ, 'construction work').