Bundesautobahn 66

Bundesautobahn 66
source
Country	DEU
Route	66
Length km	37
States	Hessen

Bundesautobahn 66 is an autobahn in central Hesse connecting the western approaches of Frankfurt am Main with the western Taunus foothills and the Wetterau region via a corridor serving Rüsselsheim am Main, Hofheim am Taunus, and Bad Homburg vor der Höhe. The route links major transport nodes including the A3, A5, and the A3 interchange network near Frankfurt Airport and provides an arterial connection to the Rhine-Main Metropolitan Region, the Frankfurt–Mannheim Railway corridor, and regional federal roads.

Route description

The autobahn begins at the western outskirts of Frankfurt am Main near the Griesheim quarter and proceeds west-northwest through the Main-Taunus-Kreis crossing the Main valley, skirting Hochheim am Main and passing close to Rüsselsheim am Main before ascending toward the Taunus near Kriftel. It intersects with the A3 and links to the A66 corridor at major junctions that provide access to Frankfurt Airport, Frankfurt Hauptbahnhof, and the Mannheim–Frankfurt railway. Continuing past Hofheim am Taunus and Kelkheim, the road rises toward Bad Homburg vor der Höhe and connects with the A5/A661 urban approaches, integrating with the B43 and B455 regional networks.

History

Planning for the corridor dates to the interwar and postwar periods when traffic demands around Frankfurt am Main and industrial nodes like Rüsselsheim am Main and Mainz intensified, influenced by reconstruction projects under the Allied occupation of Germany and later the Federal Republic of Germany. Early sections opened during the 1950s in West Germany with extensions added in the 1960s in West Germany and modernization phases in the 1970s in West Germany to accommodate increasing freight flows to Darmstadt and the Rhine. Major refurbishments were undertaken ahead of the Bundestag–led infrastructure programs in the late 20th century, and recent upgrades responded to congestion revealed during studies by the Hessen Ministry of Transport and research conducted by institutions such as the Deutsche Forschungsgemeinschaft-funded transport groups and the RWTH Aachen University traffic engineering departments.

Infrastructure and engineering

The autobahn comprises predominantly dual three-lane carriageways with sections reduced to dual two-lane profiles where terrain and urban constraints near Frankfurt am Main and Bad Homburg necessitate tighter alignments. Notable engineering features include multiple overpasses and viaducts crossing the Main tributaries engineered in coordination with firms such as Hochtief and design input from civil engineering faculties at Technische Universität Darmstadt and Universität Kassel. Noise abatement and environmental mitigation measures were implemented in collaboration with the Hessian Ministry for the Environment, Climate Protection, Agriculture and Consumer Protection and local authorities in Main-Taunus-Kreis and Hochtaunuskreis, incorporating sound barriers, wildlife crossings, and stormwater management tied to studies by the German Environment Agency.

Traffic and usage

The corridor serves high commuter volumes linking Frankfurt am Main financial centers such as the European Central Bank and the Frankfurt Stock Exchange with western suburbs and industry centers including Opel facilities in Rüsselsheim am Main and logistics hubs serving the Port of Mainz and the Frankfurt Airport. Traffic composition includes daily commuter flows to employment clusters around Frankfurt Hauptbahnhof and heavy freight movements between the Rhine Valley and central Germany corridors, influenced by seasonal tourism to the Taunus and events at the Messe Frankfurt. Traffic monitoring and incident response are coordinated with the Hessen State Police and the Autobahnmeisterei network, and academic analyses by Deutsche Bahn planning units and the Karlsruhe Institute of Technology have informed capacity assessments and safety interventions.

Future developments and upgrades

Planned improvements feature capacity expansions, interchange reconfigurations, and noise-reduction projects commissioned by the Hessian Ministry of Transport with funding mechanisms linked to federal transport packages debated in the Bundestag and technical input from consulting firms including Porsche Engineering and academic partners such as Technische Universität Darmstadt. Proposals under environmental review involve enhancing multimodal connections to Frankfurt Airport Regional Station, integrating with the S-Bahn Rhein-Main network, and constructing additional lanes or tunnels to relieve congestion near Hofheim am Taunus and Bad Homburg; these proposals have entered planning procedures overseen by the Federal Ministry of Transport and Digital Infrastructure and regional planning associations like the Regionalverband FrankfurtRheinMain.

Exit list

1. Frankfurt-Griesheim – access to Frankfurt am Main (local roads) and Mönchhofstraße. 2. Frankfurt-Höchst – links to Frankfurt-Höchst Bahnhof and the Industriepark Höchst. 3. Hattersheim/Rüsselsheim – interchange serving Hattersheim am Main and Rüsselsheim am Main industrial areas. 4. Kriftel/Hofheim – access to Kriftel and Hofheim am Taunus. 5. Kelkheim – junction for Kelkheim and Eppstein approaches. 6. Bad Homburg – major node connecting to Bad Homburg vor der Höhe town center and A5 links. 7. Wehrheim/Usingen – northern terminus region with access to Wetterau and the Taunus tourist routes.

Category:Autobahns in Hesse