SH 140 begins at the signalized intersection of Big Spring Street and West Florida Avenue.

The state-maintained West Florida Street travels due east from this intersection with speed limit of 35 miles per hour (56 km/h).

At the intersection with Main Street, the road name becomes East Florida Avenue and the speed limit increases to 40 miles per hour (64 km/h).

[4][1] For its entire length, SH 140 is a four-lane undivided asphalt road with a center turn lane.

Commercial businesses, open and abandoned, line both sides of the road throughout the entirety of the highway.

[9] On January 8, 1934, SH 140 was to be gravelled, but was to be removed from the state highway system when construction was complete.