
Hi there. In the following tutorial I will show you how to create a simple, vertical loading bar. You will start with the background, a simple rectangle with multiple fills and strokes. Next, using the Rectangle Tool along with some basic effects and techniques you will create your own loading bar.
Difficulty: Beginner
Estimated Completion Time: 45 minutes
Number of Steps: 11
This is what you’ll be creating:

Step 01
Create a 130 by 660px, RGB document. First, turn on the Grid (View > Grid) and the Snap to Grid (View > Snap to Grid). Next, you’ll need a grid every 10px. Go to Edit > Preferences > Guides & Grid, enter 10 in the Gridline every box and 1 in the Subdivisions box. You can also open the Info panel (Window > Info) for a live preview with the size and position of your shapes. Do not forget to replace the unit of measurement to pixels from Edit > Preferences > Unit > General. Al these options will significantly increase your work speed.

Step 02
Let’s start with the Rectangle Tool(M). Create a shape the size of your artboard and fill it with R=45 G=45 B=45. Select the fill from the Appearance panel and go to Effect > Stylize > Inner Glow. Enter the data shown below, click OK then open the fly-out menu of the Appearance panel and click on Add New Fill. This will add a second fill for your shape. Now, you’ll need a pattern for this new fill. Go to the Swatches panel, open the fly-out menu and go to Open Swatch Library > Pattern > Basic Graphics > Basic Graphics_Textures. This will open a new window with some nice patterns. Reselect the second fill from your shape. First, lower its opacity to 50% and change the blending mode to Multiply then use the USGS 7 Vineyard pattern.

Step 03
Reselect the shape made in the previous step and add a stroke. Make it 2pt wide, align it to inside and set its color at R=88 G=89 B=91. Next, open the fly-out menu of the Appearance panel and click on Add New Stroke. This will add a second stroke for your shape. Make it 1pt wide, align it to inside and set its color to R=35 G=31 B=32.

Step 04
Pick the Rectangle Tool, create a 30 by 560px shape, fill it with white and place it as shown in the first image. The snap to grid will ease your work. Reselect this white shape and go to Object > Path > Offset Path. Enter a -1.5px Offset and click OK. Fill the resulting shape with R=10 G=185 B=232.

Step 05
Reselect the white shape created in the previous step and fill it with R=40 G=40 B=40. Select this fill and go to Effect > Stylize > Inner Glow. Enter the data shown below then click OK. Add a second fill for this shape and use the linear gradient shown below. The white numbers from the gradient image stand for Location percentage while the yellow numbers stand for Opacity percentage. Select this second fill, lower its opacity to 25% then change the blending mode to Multiply. Next, add 1pt, black stroke and align it to outside. Reselect the entire path and go to Effect > Stylize > Drop Shadow. Enter the data shown below, click OK then go to Effect > Stylize > Rounded Corners. Enter a 15px radius then click OK. Make sure that the Rounded corner effect is in the top of the Appearance panel as shown in the image below.

Step 06
Reselect the blue shape created in the fourth step and fill it with the linear gradient shown below. Select this fill and go to Effect > Stylize > Inner Glow. Enter the data shown below then click OK. Again, you will need a simple pattern. Go to the Swatches panel, open the fly-out menu and this time go to Open Swatch Library > Pattern > Basic Graphics > Basic Graphics_Lines. Reselect your blue shape, add a second fill and select it. First, lower its opacity to 7% and change the blending mode to Overlay then use the 6 lpi 50% pattern. Reselect this entire path and go to Effect > Stylize > Rounded Corners. Enter a 15px radius then click OK. Again, make sure that the Rounded corner effect is in the top of the Appearance panel.

Step 07
Select the shape edited in the previous step, add a third fill and select it. Lower its opacity to 55%, change the blending mode to Overlay then use the linear gradient shown below. Add one final fill for this shape, set its color at R=38 G=34 B=87 and select it. Lower its oapcity to 5%, change the blending mode to Multiply then go to Effect > Blur > Gaussian Blur. Enter a 2px radius, click OK then go to Effect > Artistic > Paint Daubs. Enter the data shown below then click OK.

Step 08
For the following step you will need a grid every 5px. Go to Edit > Preferences > Guides & Grid and enter 5 in the Gridline every box. Grab the Rectangle Tool(M), create a a 30 by 20px shape, fill it with any color then go to Effect > Stylize > Rounded Corners. Enter a 5px radius, click OK then go to Object > Expand Appearance. Continue with the Rectangle Tool(M). Create a 10 by 10px shape and place it as shown in the second image. Pick the Direct Selection Tool(A), select the anchor points highlighted in the second image and go to Object > Path > Average. Check Both then click OK. Now, your shape should look like a triangle. Select it along with the rounded rectangle and click on the Unite button from the Pathfinder panel.

Step 09
Select the shape created in the previous step, fill it with the linear gradient shown below then add a first stroke. Make it 1pt wide, align it to inside then set its color to R=1 G=217 B=254. Add a second stroke for this shape. Make it 0.5pt wide, align it to inside and set its color at R=36 G=90 B=166.

Step 10
Select the shape created in the previous step, place it as shown in the first image then go to Effect > Stylize > Drop Shadow. Enter the data shown below, click OK then pick the Type Tool. Click on your artboard and add your text. Set its color at R=241 G=242 B=242, use the Calibri font with a size of 15pt then add the Drop Shadow effect shown below.

Step 11
Finally, you can resize the blue bar anyway you want.

Final
Now your work is done. Here is how it should look like.

Source & Credit : http://vforvectors.com/create-a-vertical-loading-bar/