Many of the roads in Mexico are being improved and new roads are being built. Lots of construction and repair. But still many miles that need a lot of help. Here is one of many articles I have read about the situation. They do realize it is economic and transportation is important - the trucks must carry the freight. The plan below talks about 6 years but I guess that is Mexico time.
January 2008 | Feature Stories
Mexico Paves The Road to Prosperity
http://www.inboundlogistics.com/cms/article/mexico-paves-the-road-to-properity
"Nowadays, competitiveness, economic growth, and countries' opportunities for well-being depend largely on the solidity and modernity of their infrastructure," said Mexico President Felipe Calderon on July 18, 2007, the day he announced a five-year, $37-billion public-private funding package to upgrade his country's highways, railways, ports, and airports.
Calderon cited a study showing that every percentage point of Gross Domestic Product (GDP) invested in infrastructure generates additional economic growth of 0.3 percent.
But while Mexico's transportation infrastructure has made great strides to date, obstacles still await. Logistics in Mexico currently costs up to 20 percent more than in the United States, according to consulting firm InfoAmericas.
Locals warn carriers to limit their speed on some stretches. Poor road quality also means carriers must replace trucks more frequently.
New toll road deals cover longer terms, which could encourage better quality. In August 2007, for example, ICA, Mexico's largest construction company, won the right to run four existing toll roads in central Mexico with its $4.1-billion offer in a 30-year concession. Mexico plans to construct 10,900 miles of new roads, one-fourth of them in rural areas.
Of the country's $37-billion infrastructure improvement package announced in July, $26 billion is allocated for roads, with half the additional funding coming from private sources. The government expects to complete 100 road projects, including major highways linking the Pacific and Gulf coasts, over the next six years.