Investigation of Traffic Loading Effects for Different Codes on Medium- and Small-Span Girder Bridges in China

Table 1

Traffic load grades of the bridges in different highway grades in JTJ 021-89.

Highway grades	Expressway	First-class highway	Second-class highway	Third-class highway	Fourth-class highway
Traffic loads grades	Traffic-over 20	Traffic-over 20	Traffic-20	Traffic-15	Traffic-10
		Traffic-20

Note: traffic-over 20 is applied for the first-class highway subjected to container transportation, while traffic-20 is applied for other cases.