A short straight street a little under 350 metres (1,150 ft) long, Baldwin Street runs east from the valley of the Lindsay Creek up the side of Signal Hill towards Opoho, rising from 30 m (98 ft) above sea level at its junction with North Road to 100 m (330 ft) above sea level at the top, an average slope of slightly more than 1:5. Its lower reaches are only moderately steep, and the surface is asphalt, but the upper reaches of this cul-de-sac are far steeper, and surfaced in concrete (200 m (660 ft) long), for ease of maintenance and for safety in Dunedin's frosty winters. At its maximum, the slope of Baldwin Street is about 1:2.86 (19° or 35%) – that is, for every 2.86 metres travelled horizontally, the elevation rises by 1 metre.