ies ) ▁and ▁are ▁to wed ▁by ▁rub ber ▁whe e led ▁vehicles ▁with ▁railway ▁whe els ▁or ▁bog ies ▁to ▁ride ▁along ▁the ▁rail ▁tracks . ▁ ▁From ▁ 1 8 8 0 s ▁to ▁som etime ▁after ▁ 1 9 2 6 ▁a ▁steam ▁narrow ▁gauge ▁railway ▁was ▁used ▁for ▁gold ▁mines ▁in ▁Saint - E lie ▁and ▁two ▁other ▁lines ▁were ▁partially ▁built ▁and ▁never ▁used . ▁ ▁Pr ison ▁rail ways ▁were ▁built ▁in ▁the ▁ 1 8 9 0 s ▁but ▁the ▁line ▁was ▁abandoned ▁after ▁pr isons ▁closed ▁and ▁disappeared ▁som etime ▁after ▁ 1 9 4 6 . ▁ ▁There ▁are ▁no ▁other ▁rail ways ▁in ▁French ▁Gu iana ▁and ▁none ▁have ▁existed ▁for ▁re venue ▁passenger ▁service , ▁and ▁there ▁are ▁no ▁connections ▁to ▁neighbour ing ▁countries . ▁ ▁High ways ▁total : ▁ 1 , 8 1 7   km ▁p aved : ▁ 7 2 7   km ▁un p aved : ▁ 1 , 0 9 0   km ▁( 1 9 9 5 ▁est .) ▁ ▁Water ways ▁ 4 6 0   km , ▁navig able ▁by ▁small ▁o ce ango ing ▁vessels ▁and ▁river ▁and ▁coast al ▁steam ers ; ▁ 3 , 3 0 0   km ▁navig able ▁by ▁native ▁craft ▁ ▁Port s ▁and ▁har b ours ▁C ay enne , ▁D eg rad ▁des ▁C annes , ▁Saint - La urent ▁du ▁Mar oni ▁ ▁Mer chant ▁marine ▁none ▁( 1 9 9 9 ▁est