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FYI You will find a good summary about the Steel bridge spec through Oregon state bridge manual. (This is for myself in the future.)

Thanks HG I will be seeing you within couple days with other qeustions. 60% is done for the town, and.. I now have to prepare the 60% UP submittal with everything within two weeks.

I could download the manual. Thanks Mike80

Thanks HG The bridge type for this job is steel plate girders with steel deck, fortunately it is not steel throught-girder brg. We do not need thousands of the shear studs for this project compared to concrete deck bridges. I will do more research on this matter for 90%.

This is my first RR bridge. So, I got the unit price from my highway bridge experience. I thought the total weight, 1.5 million #, may reduce the unit cost? I called around but i could not find any fabricator who can give me a good # in the state. We may have to order from out of state.

I had to decide a # for the 60% submittal yesterday,due day. My total steel weight is 1.5 million #. Initally i decided to use $1.8/# for the 60% submittal, and i am in Arizona, which was the same $ as 30% estimate. Last night, i could not sleep with that #. So today i am going to increase...

HgTX Which company are you working at? I should work for you.

No, AREMA said, two ASTM are the same. We can use any.

I am designing a UPRR underpass, multi-tracks, the superstructure is steel plate girder with steel deck, located in Arizona. I have some question on the ASTM. I designed the steel girder using 50ksi steel, but i am having hard time with what kind of ASTM steel to be used for this bridge. I am...

Do you know the website address for CSX manaul? I got a manual from SCRRA, but not from CSX.

sorry, It is defined as a underpass. (However, I think it should be a overpass, since the railroad is over the main roadway.)

I do not know anything about railroad bridge design, but i have to design a railroad. anyone knows what kind of manuals or any kind of guidelines for railroad underpass other than AREMA and UP manual available and where to get that? I am looking for this for days, but none so far. AREMA and...

Thanks VOD, Could you explain me little more about the method? What does "BS5400" stand for? Is there any nice web site for its method?

I never seen this before. so please help... I was reviewing the Ped. steel truss bridge. I see that Truss members for top and bottom chords were designed by what is called "E.C. HOLT'S RESEARCH and U-FRAME"? Can anyone explain me about its method, why, how it works for the truss chords...

what kind of washers, base plate, anchor bolts and so on for the Aluminum structure? Can we use steel anchor bolts, plate, washers etc with aluminum structure? special paint?

Thanks Qshake!!! Yes, this bridge is for a lane freeway ramp. Is the max overhang 7 ft and min 6 inch overhang reasonable, if i really want because of the bridge curvature? I am in AZ, people told me that the curved structural steel cost is very high, when compared to concrete cost. Qshake...

I have a curved bridge for the cost analysis. The radius is 167 ft with 4 span bridge. Each span is about 80 ft. My question is; can i use a post tension box girder with this curvature or not? Anyone knows where i can find the limit of post tensioning for the horizontally curved bridges? My...

Hi all, Whatever Qshake says, he is right.(I think he knows everything.) I came to this forum about 3 years ago to ask some question about the bridge design. At that time I was an entry-level bridge designer. He answered my question in a good way. I believe ROWE did good job here too. I now...

Hi, I have a steel rod, 5 inch embeded into the f'c = 2000 psi shotcrete concrete about 7 in thick. How can i compute the max allowable pull-out tension force that the concrete can resist? thanks

I am wondering how many US DOT are currently using AASHTO LRFD code for their bridges. Arizona = ASD Washington = LRFD I am not sure about other states. Can anyone tell me about it?