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A by-the-numbers look at SC's highway needs

The state Department of Transportation estimates needing an additional $1.5 billion yearly over 20 years to bring roads to "good" condition.

COLUMBIA, S.C. (AP) -- The state Department of Transportation estimates needing an additional $1.5 billion yearly over 20 years to bring roads to "good" condition. It's responsible for maintaining:



-- 41,444 highway miles: 851 interstate miles, 9,475 miles of federal and state highways, and 31,118 miles of secondary roads. Nearly 70 percent of secondary roads aren't eligible for any federal funding.



-- 8,383 bridges



-- 9 welcome centers



-- 19 rest areas



-- mowing of 128,000 roadside acres



-- 20 million feet of sidewalk



-- 1,700 miles of guardrail



-- 5,600 traffic signals and flashers



-- 643,000 traffic signs



-- 23 million feet of curbs and gutters



Of those nearly 8,400 bridges:



-- 7 are closed



-- 420 have weight restrictions for crossing



-- 886 are rated in poor condition



-- 777 are considered functionally obsolete, due to outdated designs



Of those nearly 41,500 highway miles:



-- 53 percent of secondary roads rate in "poor" condition; 36 percent are "fair," and 11 percent are "good"



-- 47 percent of federal and state highways rate "poor;" 40 percent "fair," and 13 percent "good"



-- 8 percent of interstate miles are "poor," 23 percent "fair," and 69 percent "good"



Source: SC Department of Transportation

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