Scheme for Bridge and Road Approaches
Scheme for Bridge and Road Approaches
(OP)
We have this problem for the scheme of the bridge, to get the optimal length and height.
I have some clarifications on the allowable/standards/usual guidelines in the design.
1. What is the maximum grade/slope for road approaching the bridge? (excluding the approach slab and additional minimum vertical curve after/before the approach slab) Is it 7%? or 12%? This is for mountainous areas.
2. What is the optimal span/length of bridge for this situation? (Just an approximation)
Attached is the profile of road approach with the river cross section
TIA!
I have some clarifications on the allowable/standards/usual guidelines in the design.
1. What is the maximum grade/slope for road approaching the bridge? (excluding the approach slab and additional minimum vertical curve after/before the approach slab) Is it 7%? or 12%? This is for mountainous areas.
2. What is the optimal span/length of bridge for this situation? (Just an approximation)
Attached is the profile of road approach with the river cross section
TIA!
Very Truly Yours,
- andru18





RE: Scheme for Bridge and Road Approaches
The maximum grade is a function of the roadway type, geometry, vehicle type etc; for example, in NY, the maximum grade for interstate highways is limited to 5%.
RE: Scheme for Bridge and Road Approaches
Very Truly Yours,
- andru18