This tutorial will highlight many of the advanced geometric modeling capabilities available in PGSuper. These capabilities include:

Complex roadway geometry including multiple horizontal curves with transition spirals
Complex alignment profiles including multiple, non-symmetric vertical curves
Complex superelevation transitions including multiple crown point offsets
Flared (non-parallel) girders
Tapered deck edges with spline transitions
Different girder spacing at each end of a span
Different number of girders in each span
Different girder spacing on either side of a pier
Different types of girders within a bridge

Example Bridge 1

The bridge we will be modeling has 3 - 80ft spans.

Abutment 1 is located at station 1+20.
Span 1 has 5-WF58G girders at 6'-0".
Span 2 has 4-WF58G girders spaced at 8'-0" at the centerline of pier 2 and 6'-0" at the centerline of pier 3.
Span 3 has 4-WF58G girders spaced at 6'-0".

The bridge deck is 31 ft (16' on left and 15' on right of CL bridge) wide at pier 2 and 24.5 ft (12.5' on left and 12' on right of CL bridge) wide at pier 3. The deck is a constant width, and parallels the alignment between Abutment 1 and Pier 2 and also between Pier 3 and Abutment 4. The deck edge is a spline taper between pier 2 and 3.

The bridge is on a curved portion of the alignment. The back tangent is N 90 E, the PI station is 5+00 with a delta of 25 L and Radius of 2000 ft.

Example Bridge 1 Tutorial

Example Bridge 2

The bridge in this example is has 3 spans consisting of 7-W42G girders. The configuration is

Alignment

Item	Description
Initial Direction	S 60 13 00 W
PI Station	45+46.40
Delta	98 23 00 R
Radius	424.41 ft

Profile

Item	Description
PVI	47+75.00
PVI Elevation	53.04
Entry Grade	5.45%
Exit Grade	0.5%
Length	350 ft

Superelevations

Item	Description
Station 47+33.70	Left Slope = 0.1ft/ft, Right Slope = -0.1ft/ft
Station 49+33.70	Left Slope = 0.02ft/ft, Right Slope = -0.02ft/ft

Bridge

Abutment 1

Location: Sta 47+40.99 Orientation: N 40 58 00 E

Between Girders	Spacing
A-B	5'-3"
B-F	6'-0"
F-G	5'-6"

Pier 2

Location: 47+84.73 Orientation: N 40 58 00 E

Between Girders	Spacing
A-B	6'-1.5"
B-F	6'-0"
F-G	6'-1.5"

Pier 3

Location: 48+53.21 Orientation: N 40 58 00 E

Between Girders	Spacing
A-B	5'-7.5"
B-F	6'-0"
F-G	5'-7.5"

Abutment 4

Location: 49+17.14 Orientation: N 31 28 00 E

Between Girders	Spacing
A-B	5'-7.5"
B-F	6'-9"
F-G	5'-7.5"

The girder spacing is measured along the centerline of bearing at the abutments and along the centerline of pier at the interior piers.

The deck width is 35'-9" at Station 47+83.70 and linearly tapers-a width of 33'-9" at station 49+17.17.

Example Bridge 2 Tutorial