Exhibit 99.1

Genesee & Wyoming Provides Second Quarter 2015 Business Update; Reports Traffic for May 2015

DARIEN, Conn. — (BUSINESS WIRE) — Jun. 11, 2015 — Genesee & Wyoming Inc. (G&W) (NYSE: GWR) today provided a business update for the second quarter of 2015 and reported traffic volumes for May 2015.

Second Quarter 2015 Business Update

G&W’s traffic in the second quarter of 2015 through May has been below the Company’s expectations, with same-railroad traffic declining 13.4% versus prior year, compared with expectations of a decline of 5% versus prior year for the full quarter. Significant negative North American carload variances versus expectations through May 2015 include: (1) lower steam coal traffic, primarily due to competition from natural gas, (2) lower agricultural products and food & kindred products, primarily due to the timing of shipments, (3) lower than expected shipments of energy related traffic such as crude oil and frac sand and (4) lower metals traffic, which has been adversely impact by competition from imported steel.

Based on results through May, G&W expects second quarter 2015 revenues to be approximately $535 million to $545 million, below its guidance of $565 million to $580 million provided on May 1, 2015, and an operating ratio between 81% - 82%, compared with guidance of approximately 80%. As a result, G&W expects consolidated earnings per diluted share in the second quarter of 2015 to be approximately $0.90 to $0.94 compared to guidance provided on May 1, 2015 of $1.05 to $1.10.

G&W expects to provide an update to full year 2015 guidance on its second quarter earnings call, to be held in early August 2015.

May 2015 Traffic

G&W’s traffic in May 2015 was 150,010 carloads, a decrease of 21,381 carloads, or 12.5%, compared with May 2014. G&W’s same-railroad traffic in May 2015 was 142,555 carloads, a decrease of 28,836 carloads, or 16.8%, compared with May 2014. Traffic from G&W’s Freightliner acquisition, which was completed on March 25, 2015, is not included in this press release.

G&W’s traffic in the second quarter of 2015 through May was 311,996 carloads, a decrease of 29,908 carloads, or 8.7%, compared with the second quarter of 2014 through May. G&W’s same-railroad traffic in the second quarter of 2015 through May was 296,084 carloads, a decrease of 45,820 carloads, or 13.4%, compared with the second quarter of 2014 through May.

The table below sets forth consolidated summary carload information for May 2015 and May 2014 by commodity group.

Same-railroad Highlights:

The following highlights relate to same-railroad traffic, excluding traffic from the Rapid City, Pierre & Eastern Railroad, which commenced operations on June 1, 2014 and the Arkansas Midland Railroad, the Prescott & Northwestern Railroad and the Warren & Saline River Railroad, which were acquired on January 5, 2015.

The table below sets forth consolidated summary carload information for the second quarter of 2015 through May and the second quarter of 2014 through May by commodity group.

Same-railroad Highlights:

The following highlights relate to same-railroad traffic, excluding traffic from the Rapid City, Pierre & Eastern Railroad, which commenced operations on June 1, 2014 and the Arkansas Midland Railroad, the Prescott & Northwestern Railroad and the Warren & Saline River Railroad, which were acquired on January 5, 2015.

Other

Historically, G&W has found that carload information may be indicative of freight revenues on its railroads, but may not be indicative of total revenues, operating expenses, operating income or net income. Car movements related to railcar switching, including activities at port terminals, are excluded from our carload information as the resulting revenues are classified as non-freight.

About G&W

Genesee & Wyoming owns or leases 120 freight railroads worldwide that are organized in 11 operating regions with 7,700 employees and more than 2,500 customers.

G&W subsidiaries provide rail service at more than 40 major ports in North America, Australia and Europe and perform contract coal loading and railcar switching for industrial customers.

For more information, visit gwrr.com.

Cautionary Statement Concerning Forward-Looking Statements

This press release contains forward-looking statements regarding future events and the future performance of G&W that are based on current expectations, estimates and projections about our industry, management’s beliefs and assumptions made by management. Words such as “anticipates,” “intends,” “plans,” “believes,” “could,” “should,” “seeks,” “expects,” “will,” “estimates,” “trends,” “update,” “outlook,” variations of these words and similar expressions are intended to identify these forward-looking statements. These statements are not guarantees of future performance and are subject to certain risks, uncertainties and assumptions that are difficult to forecast, including, but not limited to, those risks noted in our 2014 Annual Report on Form 10-K and our Quarterly Reports on Form 10-Q under “Risk Factors.” Therefore, actual results may differ materially from those expressed or forecasted in any such forward-looking statements. Forward-looking statements speak only as of the date of this press release or as of the date they were made. G&W does not undertake, and expressly disclaims, any duty to publicly update any forward-looking statement, whether as a result of new information, future events, or otherwise, except as required by law.

Exhibit

The table below sets forth North American carload information for May 2015 and May 2014 by commodity group.

The table below sets forth North American carload information for the second quarter of 2015 through May and the second quarter of 2014 through May by commodity group.

The table below sets forth Australian carload information for May 2015 and May 2014 by commodity group.

The table below sets forth Australian carload information for the second quarter of 2015 through May and the second quarter of 2014 through May by commodity group.

SOURCE: Genesee & Wyoming Inc.

Genesee & Wyoming Inc.

Thomas D. Savage, 1-203-202-8900

Vice President – Corporate Development & Treasurer

Web Site: http://www.gwrr.com