136 



STEEL HIGHWAY BRIDGES. 



CHAP. III. 



'Yfosher 



^^7-OOx.Kr-H: 



FENCE FOR ^3^ ST- VIADUCT, 

 DENVER, COLORADO- 



J'GasPfjpe-iC^ 



r > " kwwztf 



20^ ST- VIADUCT, 

 DENVER, COLORADO- 



Swtion A-B. 



ELECTRIC LIGHT POLE, 

 I&ST- V/ADUCT, DENVER, COLO* 



FIG. 30. STEEL FENCE FOR HIGHWAY BRIDGES. 



FENCE AND HUB GUARDS. The fence on steel bridges is commonly made of two lines 

 of channels or two lines of angles with angle posts. Posts should not be spaced farther apart than 

 8 ft. to 10 ft. 



A gas pipe railing with gas pipe posts is in frequent use. The posts should be spaced not more 

 than 8 ft. apart. Details of the fence and light poles for the 2Oth St. Viaduct, and the fence on 

 23d St. Viaduct, Denver, Colo., designed by Mr. H. S. Crocker, consulting engineer, are shown in 

 Fig. 30. 



