Dissolve One Field, Append to another

Hello,

I am trying something new and I didn't know what to search for in the forums. I have created a key map, where every page in the book is a different part of the city. The pages run sequentially (ie A1, A2, A3, B1, B2, B3). At the end there is an index with every street name listed. Next to each street name are the page numbers the street falls on. I have an Excel document, attached here, showing all the street names in one column and page number in another column. However, a street may be listed multiple times if it falls on multiple pages. I need to be able to "dissolve" the street names so they are listed once and append the page column to the street column. Therefore it will go from:

Street Name
Aaron St -------- D3
Aaron St -------- D4
Aaron St -------- D5
Abby Ln -------- C2
Abby Ln -------- D2

To This:

Street Name PageName
Aaron St: D3; D4; D5
Abby Ln: C2; D2

I hope that makes sense. Thank you.