Jo Daviess County. Our own 3DEP reading at the USGS point is 1,234 feet. The low point is 279 feet where the Ohio joins the Mississippi at Cairo, a Corps of Engineers figure in the USGS table
Against under 32 inches in the north. Snow runs the other way, 36 inches a year up north and under 10 in the far south
Steel, mounts and the width question
There is little in Illinois that will dent a fabricated bumper. The work here is protection from water and from the Department of Transportation’s 357,500 tons of road salt: sealed welds, drainable box sections, galvanised or properly coated steel, and fasteners chosen so they will come apart again in five years.
The other job is carrying things. Because the only motorised trail system in the state takes nothing over 64 inches and requires that every machine arrives on a trailer, Illinois fabricators spend more time on hitch work, tie-down points, ramp storage and secure racks than on rock sliders. Build for the tow and the wash bay.
When a catalog part does not exist for your vehicle, does not fit with what you already have, or is not strong enough for what you do, a fabricator builds it. Steel or aluminum, welded, finished, and mounted so the load goes into structure rather than sheet metal.
They also fix what breaks: cracked mounts, bent sliders, torn brackets and the frame damage that ends trips.
Common work
01Bumpers with winch mounts and rated recovery points
02Rock sliders and skid plates
03Roof racks, bed racks and ladders
04Swing-outs for tires, fuel and water
05Mounts for tanks, compressors and batteries
06Frame and bracket repair
How to choose a fabricator
Metalwork is easy to judge if you know where to look.
01Look at the welds, then at how the part mounts. Recovery points and sliders should tie into the frame.
02Ask whether they design in CAD or build to the vehicle, and whether you get drawings.
03Ask about material and finish. Raw, painted and powder coated parts age very differently.
04Ask if they have built for your platform before. Templates and fixtures save you money.
05Ask how a front bumper affects airbag sensors and crush zones. A shop that has done it properly will have an answer.
What to have ready before you ask for a quote
Photographs do most of the talking.
01Clear photos of the vehicle and the area the part mounts to
02What is already mounted there: winch model, lights, tire size
03What the part has to carry, and how much it weighs
04Steel or aluminum, and the finish you want
05A budget range and your timing
Questions people ask
Custom or off the shelf?
If a well-made part exists for your vehicle, it is usually cheaper and faster than custom, and a good fabricator will tell you so. Custom earns its cost when nothing fits, when parts from different makers have to work together, or when you need it stronger or lighter than the catalog offers.
Steel or aluminum?
Steel is stronger for the money, easier to repair in the field and heavier. Aluminum saves real weight on racks, skid plates and boxes, but costs more and needs a welder who works with it regularly. Many builds use both: steel where it hits rocks, aluminum where it just carries things.
Can a fabricator repair a cracked frame or mount?
Often, yes. Send clear photos with your request. A good shop will tell you whether it can be repaired properly or needs replacing.
How high is Illinois?
From Cairo at 313 feet to Charles Mound at 1,235.
Altitude decides what your engine, your brakes and your lungs have to work with, and how late in the year the passes open.
02,000
Feet above sea level
Towns
ShelbyvilleShelby County seat at Lake Shelbyville, six federal campgrounds and two state parks on one reservoir, with Hidden Springs State Forest ten miles southeast.646 ft
JonesboroUnion County seat. Mississippi Bluffs Ranger District office, Trail of Tears State Forest five miles northwest, and the LaRue Pine Hills loop starts here.570 ft
OquawkaHenderson County seat on the Mississippi. Big River State Forest and its 60 miles of firebreaks are eight miles north on the Oquawka to Keithsburg road.553 ft
WilmingtonOn State Route 53, the old Route 66 alignment, two miles south of the Midewin National Tallgrass Prairie headquarters and welcome centre.543 ft
Forest CityMason County village that is the headquarters address for Sand Ridge State Forest, the largest state forest in Illinois and its main backcountry camping.494 ft
BentonFranklin County seat off I-57. Rend Lake and its five public campgrounds sit west of town, with the Corps office on Rend City Road.473 ft
CarlyleOn US 50 fifty miles east of St. Louis at the largest lake in the state, with the Corps visitor centre on the shore and camping all round it.460 ft
MurphysboroJackson County seat on Route 149. Johnson Creek Recreation Area on Kinkaid Lake, one of four Shawnee campgrounds rated for a 40-foot rig, is northwest.419 ft
CarbondaleLargest town in southern Illinois and the working base for the western Shawnee. Giant City State Park is near town and the Mississippi Bluffs district office is south at Jonesboro.416 ft
ViennaJohnson County seat on Route 45. Hidden Springs Ranger District office, one of the forest’s two districts and the office that issues its own motor vehicle use map.412 ft
Carrier MillsAddress of the Sahara Woods site office and the nearest town to the only state-run off-highway vehicle trails in Illinois.395 ft
HarrisburgSaline County seat on US 45. Shawnee National Forest supervisor’s office is on Highway 145 south of town, the Garden of the Gods road leaves Route 145 for Route 34, and the state OHV park is five miles west.394 ft
Cave-in-RockOhio River village at the state park with the 55-foot cave. The free Cave-In-Rock Ferry crosses to Kentucky here, supported jointly by both states.375 ft
ElizabethtownHardin County seat on the Ohio River Scenic Byway, between the Garden of the Gods road and the river, with Tower Rock’s free campground east on Route 146.361 ft
GolcondaPope County seat on the Ohio River Scenic Byway, on the eastern side of the Shawnee in the Hidden Springs district.354 ft
CairoThe southern tip of Illinois where the Ohio meets the Mississippi at 279 feet, the state low point, and where the Illinois stretch of the Ohio River Scenic Byway ends.313 ft
Passes, high roads and summits
Charles MoundThe highest point in Illinois, in Jo Daviess County in the far northwest corner. Our own 3DEP reading at the USGS point is 1,234 feet1,235 ft
Williams HillPope County, high ground in the Shawnee Hills on the eastern side of the national forest. The figure is our own reading of the elevation surface at its map point, because no agency publishes one1,062 ft
Bald KnobUnion County, in the hills behind the Mississippi bluffs on the western side of the national forest. The figure is our own reading of the elevation surface at its map point, because no agency publishes one1,028 ft
Pass, road and summit elevations are the figures published by the agency that manages them. Town elevations are the town’s or county’s own
figure where it publishes an exact one; the rest are from the U.S. Geological Survey (3D Elevation Program at the place’s official coordinates),
retrieved September 18, 2026. Every source is listed at the foot of the page.
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