Bridgeport Ventures Inc. Reports Assay Results

TORONTO, ONTARIO -- (Marketwire) -- 07/28/10 -- Bridgeport Ventures Inc. (TSX: BPV) ("Bridgeport" or the "Company") reports assay results from the Phase One drill program on its Rosario project.

The Phase One program, which was completed on June 18, 2010, tested a number of separate geological targets. A Phase Two drill program designed to follow up on some of the more promising results from Phase One commenced on July 10, 2010.

Significant intervals encountered in holes 02, 03, 08 and 10 are provided below.

                 Total
                Length  Interval  Interval  Interval
Drill Hole        (m)  From (m)    To (m)Length (m)  Copper %   Gold g/t
02                 230        52        82        30       .79        .22
03                 302        14        54        40       .76        .30
                                                                less than
08                 200        02        64        62       .25        0.1
                                                                less than
10                 200        82       128        46       .74        0.1

Complete results from the Phase One drill program are available at the companys website www.bridgeportventures.net.

The above program was carried out by Company geologists under the supervision of Matthew D. Gray, Ph.D., C.P.G. 10688, the Qualified Person for Bridgeport under National Instrument 43-101. Control samples comprised of blanks, standards, and duplicates, were included in the sample stream as part of a QA/QC protocol. Drill core recovery exceeded 95%. Dr. Gray reviewed the control sample data and concluded the drill hole data is reliable, that samples collected are representative of the features being drill tested, and that the drill hole database meets industry standards for data quality. Dr. Gray verified the technical information contained in this press release. Potential quantity and grade is conceptual in nature. There has been insufficient exploration to define a mineral resource on the Rosario project to date and it is uncertain if further exploration will result in such target being delineated as a resource. For further information on the Rosario project, please refer to the technical report dated November 27, 2009 as amended December 4, 2009, entitled "Summary Report on the Rosario Copper-Gold Project, Region III, Atacama, Chile" prepared for the Company by Dr. Matthew Gray, available on SEDAR at www.sedar.com.

About Bridgeport Ventures

Bridgeport Ventures (TSX: BPV) is a Canadian mineral exploration company with operations in Latin America. Its strong technical team with local experience has a solid record of discovery and a proven history of mining success. Additional information on Bridgeport Ventures can be found at: www.bridgeportventures.net.

Forward Looking Statements - Certain information set forth in this news release may contain forward-looking statements that involve substantial known and unknown risks and uncertainties. These forward-looking statements are subject to numerous risks and uncertainties, certain of which are beyond the control of Bridgeport, including, but not limited the impact of general economic conditions, industry conditions, risks associated with the uncertainty of exploration results and estimates, currency fluctuations and exploration risk. Readers are cautioned that the assumptions used in the preparation of such information, although considered reasonable at the time of preparation, may prove to be imprecise and, as such, undue reliance should not be placed on forward-looking statements.