SC 905 appears west of Longs 1938 Official

SC 905 extended to Conway 1939 Official

In 1942, SC 905 was extended west with SC 90, then south with US 701 through Conway, then west as new primary routing to end at today's S-26-24 in Dongola; also, SC 905 was extended east from SC 9 to the NC State Line.
In 1947, SC 905 was reduced to running from US 501/SC 90 Conway to SC 9 Longs. West of Conway remained SC 90 (3rd Av), US 701 (4th Av), and S-26-29 (leaving US 701 this is now S-26-343). East of Longs became S-26-30.
In 1957, SC 905 was re-extended from SC 9 Longs to the North Carolina State Line.

SC 905 expanded both directions 1942 Official

SC 905 reduced to 1939-42 routing 1948 Official

SC 905 returned to NC 1957 Official

In 1962, SC 905 was put on its present crossing of Kingston Lake into downtown Conway on 4th Ave. Up to then SC 905 used Inlet Ln east of the lake and Kingston St west to 3rd Ave (S-26-18) down to Main St.

SC 905 original Conway approach 1947 Official

SC 905 moved to 4th Ave 2012 City of Conway

County maps up through 2005 still don't show it, but SC 905 was extended on 4th Ave out to the US 501-701 interchange southwest of Conway. This was a replacement for part of US 701. It was definitely this way by 1987 and may date back to the creation of the US 501 Bypass in 1959.
Improvements: Fully paved by 1948. Multilane between US 701 and US 378 and also across Kingston Lake.
Comment: Not much happening with SC 905. Simply a road connecting through east-central Horry County.
SC 905 is posted such that it appears to end at US 378 but this is because there is no direct connection from US 701 NB to follow US 501 Bypass NB.
On the Inlet Ln alignment of old SC 905 there is a terrific set of old railroad crossbuck signs.