14-3 运输线路长度（2007—2009年）
Length of Transport Routes, 2007-2009
单位：公里 (km)
指     标	Item	2007	2008	2009
公路通车里程	Length of Highways with Transport Service	11531	12059	14315
# 等级公路	Expressway and Class I to IV Highway	10839	11225	13431
# 高速公路	Expressway	682	835	884
内河航道里程	Length of Navigable Inland Waterways	412	412	412
民航航线里程	Length of Civil Aviation Routes	23688	35494	40341
输油气管道里程	Length of Petroleum & Gas Pipelines	691	730	608
注：内河航道里程为内河清淤里程。民用航空航线里程为国航天津分公司在天津机场起降飞机的里程。
Note: Length of navigable inland waterways refers to length of inland waterways with slit cleaned up.
Length of civil aviation refers to the length of Air China Tianjin Company flights at Tianjin Airport.