E-band millimeter-wave (mm-wave), due to its large bandwidth, is considered promising for building high-speed wireless backhauls. However, link availability and transmission rate can be greatly affected by E-band propagation characteristics. In the paper, we study E-band propagation in urban backhaul scenarios and evaluate system performance. We conducted channel measurements in a campus environment, where on-ground pole-mounted backhauling and rooftop outdoor-to-indoor (O2I) scenarios were considered. Based on the measurement data, we find that the measured E-band pathloss is close to free-space propagation loss. Additionally, there is an around 4-dB penetration loss caused by glass window in the O2I propagation. Fading is found to be severe in the on-ground scenario, but insignificant in the rooftop O2I link. Performance evaluation shows that an uncoded rate of 3 Gbps can be easily achieved over a 750-MHz bandwidth. The results help understand E-band propagation characteristics and are useful for backhaul system design.