| 45| 20|Heavy |[1] 2,700.00 | |Bridge | | | | | | | | | | Washington: | | | | | | Onion Flat Trestle|199|599' Wood | 599| 18|Heavy |[3] 8,372.22 between Rex and | |Trestle | | | | Tigardville | | | | | | Tualatin River |204|144' Wood Span | 310| 18|Heavy |[3] 12,968.60 Bridge, 2 mi. | | | | | | So. of | | | | | | Tigardville | | | | | | Fanno Creek Bridge|264|70' Wood | 70| 18|Heavy |[3] 1,882.81 at Tigard | |Trestle | | | | | | | | | | Wheeler: | | | | | | Bridge over Bridge|176|162' Wooden | 333| 16|Medium|[1] 10,000.00 Creek, near | |Span | | | | Mitchell | | | | | | Bridge over Bridge|177|90' Wooden Span| 105| 16|Medium|[3] 6,774.15 Creek, 4 mi. | | | | | | West of Mitchell| | | | | | Bridge over West |178|30' Wooden Span| 30| 16|Medium|[1] 500.00 Branch Creek, | | | | | | near Mitchell | | | | | | Bridge at Mitchell|179|162' Wooden | 200| 16|Medium|[1] 8,000.00 | |Span | | | | | | | | | | Yamhill: | | | | | | Bridge over |262|40' Wooden Span| 97| 18|Medium|[1] 1,000.00 Yamhill River--6| | | | | | mi. West of | | | | | | Grande Ronde | | | | | | Bridge over Cedar |263|30' Wooden Span| 68| 18|Medium|[1] 800.00 Creek--4 mi. | | | | | | West of Grande | | | | | | Ronde | | | | | | --------------------+---+---------------+----+---+------+-------------- Total | $788,788.09 --------------------------------------------------------+-------------- [1] Designed by Highway Department but not yet constructed. [2] Designed by Highway Department and construction supervised by Counties. [3] Designed and construction supervised by Highway Department. Where loading is referred to as "Heavy," the structure is designed for a twenty-ton roller and for 100 lbs. per sq. ft. Where loading is referred to as "Medium," the structure is designed for a fifteen-ton roller and for 75 lbs. per sq. ft. SUMMARY OF BRIDGE AND CULVERT DESIGN AND CONSTRUCTION