Iowa 99 was a 33.3 mile long loop from U.S. 34 in Burlington to U.S. 61 in Wapello. Decommissioned on July 1, 2003, Iowa 99 was redesignated as County Road 99 through both Des Moines and Louisa Counties. Fitting within the state wide grid, the designation changed in 2005 to County Road X99.1
Running along the Mississippi River bluff line, County Road X99 north from U.S. 34/Iowa 163 in Burlington to Oakville is part of the Great River Road National Scenic Byway. The Iowa Great River Road separates with CR X99 north of Toolesboro along Louisa County Road X61 to Muscatine.
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| Main Street becomes County Road X99 north at the ramps with U.S. 34/Iowa 163 and the Great River Bridge. 05/29/18 |
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| The entrance ramp for U.S. 34 east across the Great River Bridge to Gulfport, Illinois departs from Columbia Street just off Main Street. 05/29/18 |
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| U.S. 34 travels east from Burlington to Monmouth and Galesburg, Illinois. 05/29/18 |
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| A loop ramp joins CR X99 (Bluff Road) with the freeway taking U.S. 34/Iowa 163 westbound to West Burlington. 05/29/18, 03/25/16 |
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| Overlooking the Mississippi River southwest of Baby Rush and Fetter Islands on CR X99 (Bluff Road) north of U.S. 34/Iowa 163. 03/25/16 |
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| Des Moines Avenue links CR X99 with the Burlington street grid to the south. Cash Street spurs east to an array of industrial businesses along both O'Connell Slough and Flint Creek. 03/25/16 |
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| County Road X99 overlays Des Moines Avenue northward to the Burlington city line at Flint Creek. 03/25/16 |
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| A 1936-built span takes CR X99 across Flint Creek. 03/25/16 |
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| Great River Road trailblazer posted ahead of Tama Road. 03/25/16 |
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| Some street blades still reference former Iowa Highway 99, such as this assembly at 118th Street. 03/25/16 |
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| Highway 99 street blade at the intersection of Y Camp Road and CR X99. 03/25/16 |
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| County Road X99 lines Des Moines Avenue south from Flint Creek into the city of Burlington. Des Moines Avenue splits with the route at Cash Street and Bluff Road. 03/25/16 |
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| Bluff Road leads CR X99 south between Mosquito Park and Riverside Park adjacent to the Burlington Junction Railway (BJRY). 03/25/16 |
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| CR X99 meets U.S. 34 and Iowa 163 at the west end of the Great River Bridge spanning the Mississippi River from Gulfport, Illinois. 03/25/16 |
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| A folded diamond interchange connects CR X99 (Bluff Road) and Main Street with the U.S. 34/Iowa 136 freeway through Burlington. 03/25/16 |
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| U.S. 34 and Iowa 163 overlap west from the Illinois state line to Mount Pleasant, Fairfield and Ottumwa. 03/25/16 |
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| Passing below the Great River Bridge, Bluff Road (CR X99) transitions to Main Street leading into Downtown Burlington. 03/25/16 |
Page Updated 12-20-2019.
