11. Segment Information MYR Group is a holding company of specialty contractors serving electrical utility infrastructure and commercial construction markets in the United States and western Canada. The Company has two reporting segments, each a separate operating segment, which are referred to as T&amp;D and C&amp;I. Performance measurement and resource allocation for the reporting segments are based on many factors. The primary financial measures used to evaluate the segment information are contract revenues and income from operations, excluding general corporate expenses. General corporate expenses include corporate facility and staffing costs, which include safety costs, professional fees, IT expenses, management fees, and intangible amortization. The accounting policies of the segments are the same as those described in the Note 1 Organization, Business and Significant Accounting Policies to the Financial Statements in the Companys Annual Report on Form 10-K for the year ended December 31, 2018. Transmission and Distribution: The T&amp;D segment provides a broad range of services on electric transmission and distribution networks and substation facilities which include design, engineering, procurement, construction, upgrade, maintenance and repair services with a particular focus on construction, maintenance and repair. T&amp;D services include the construction and maintenance of high voltage transmission lines, substations and lower voltage underground and overhead distribution systems. The T&amp;D segment also provides emergency restoration services in response to hurricane, ice or other storm-related damage. T&amp;D customers include investor-owned utilities, cooperatives, private developers, government-funded utilities, independent power producers, independent transmission companies, industrial facility owners and other contractors. Commercial and Industrial: The C&amp;I segment provides services such as the design, installation, maintenance and repair of commercial and industrial wiring, installation of traffic networks and the installation of bridge, roadway and tunnel lighting. Typical C&amp;I contracts cover electrical contracting services for airports, hospitals, data centers, hotels, stadiums, convention centers, manufacturing plants, processing facilities, waste-water treatment facilities, mining facilities and transportation control and management systems. The C&amp;I segment generally provides electric construction and maintenance services as a subcontractor to general contractors in the C&amp;I industry, but also contracts directly with facility owners. The C&amp;I segment has a diverse customer base with many long-standing relationships. The information in the following table is derived from the segments internal financial reports used for corporate management purposes: Three months ended March 31, (In thousands) 2019 2018 Contract revenues: T&amp;D $ 272,548 $ 216,386 C&amp;I 195,546 129,225 $ 468,094 $ 345,611 Income from operations: T&amp;D $ 14,930 $ 13,541 C&amp;I 5,058 5,336 General Corporate (10,362 ) (10,470 ) $ 9,626 $ 8,407 For the three months ended March 31, 2019 and 2018, contract revenues attributable to the Companys Canadian operations were $ 12.7 million and $14.7 million, respectively, predominantly in the C&amp;I segment.