East-West Gateway Council of Governments

The East-West Gateway Council of Governments (EWG) is the designated metropolitan planning organization (MPO) for the St. Louis region, coordinating transportation, land use, and regional planning across a bi-state area spanning Missouri and Illinois. This page defines EWG's institutional scope, explains how its planning and funding mechanisms operate, identifies the scenarios in which its authority is most consequential, and clarifies what falls inside versus outside its jurisdiction. Understanding EWG's role is essential for interpreting St. Louis regional planning decisions that affect infrastructure investment, federal funding allocation, and long-range land use coordination.

Definition and scope

The East-West Gateway Council of Governments was established as a voluntary association of local governments under Missouri's intergovernmental cooperation statutes and parallel Illinois enabling law. The U.S. Department of Transportation designates EWG as the MPO for the St. Louis metropolitan area, a status that carries binding obligations under 23 U.S.C. § 134, the federal highway and transit planning statute. Any urbanized area with a population exceeding 50,000 is required by federal law to have a designated MPO, and EWG fulfills that requirement for the St. Louis region.

EWG's geographic scope covers a core planning area that spans 8 counties: St. Louis City, St. Louis County, St. Charles County, Jefferson County, and Franklin County on the Missouri side, and Madison County, St. Clair County, and Monroe County on the Illinois side. The organization's member governments include cities, counties, and townships within that footprint, each represented through the Board of Directors. The bi-state development framework that shapes metro transit investment is closely related to EWG's planning outputs but administered through a separate agency.

Scope boundary and coverage limitations: EWG's planning authority does not extend to municipalities or counties outside the designated 8-county planning area. Illinois state law and Missouri state law each apply independently within their respective boundaries — EWG coordinates across the state line but has no authority to unilaterally bind either state government. Individual municipal zoning decisions, county subdivision regulations, and local ordinance enforcement all remain outside EWG's jurisdiction. EWG does not cover rural portions of Missouri or Illinois that fall beyond the federally designated urbanized area boundary.

How it works

EWG carries out its mandate through four core planning instruments required by federal law:

  1. Metropolitan Transportation Plan (MTP): A long-range document covering at least a 20-year horizon. The MTP inventories transportation infrastructure needs, establishes project priorities, and must demonstrate financial constraint — meaning projected revenues must equal or exceed projected costs across the plan period. Projects not included in a conforming MTP are ineligible for federal Surface Transportation Program funds.

  2. Transportation Improvement Program (TIP): A short-range, 4-year schedule of federally funded transportation projects drawn from the MTP. Every project receiving federal highway or transit dollars in the St. Louis metro must appear in the current TIP. The TIP is updated at least every 4 years (23 U.S.C. § 134(j)).

  3. Unified Planning Work Program (UPWP): An annual document describing all transportation and land use planning activities EWG will undertake using federal Metropolitan Planning (PL) funds. The UPWP provides accountability for how federal planning dollars are spent within the region.

  4. Air Quality Conformity Determination: Because portions of the St. Louis metro have historically been designated as nonattainment or maintenance areas under the Clean Air Act, EWG must certify that the MTP and TIP conform to the State Implementation Plan (SIP) administered jointly by Missouri and Illinois environmental agencies.

Federal planning funds flow to EWG through the Missouri Department of Transportation (MoDOT) and the Illinois Department of Transportation (IDOT), which also serve as voting members on EWG's policy committees. The Federal Highway Administration (FHWA) and the Federal Transit Administration (FTA) exercise oversight and certification authority over EWG's planning process.

Common scenarios

EWG's decisions become operationally visible in several recurring contexts:

Federal transportation funding allocation. When St. Louis County, St. Louis City, or any member jurisdiction applies for Surface Transportation Block Grant funds, Congestion Mitigation and Air Quality (CMAQ) funds, or federal transit capital grants, EWG's TIP must include the project. A project not programmed in the TIP cannot receive federal authorization regardless of its technical merit.

Interstate infrastructure coordination. Projects that cross the Mississippi River — including bridge rehabilitation, freight corridor improvements, or transit extensions into Illinois — require coordination between Missouri and Illinois state agencies, FHWA, and EWG. The Metro Transit governance structure for light rail and bus rapid transit investments exemplifies this dynamic, as service crosses state lines while funding is programmed through EWG's TIP.

Regional data and research. EWG publishes population projections, travel demand models, and land use forecasts that member governments and the broader public use for comprehensive planning. These data products influence decisions at the St. Louis metropolitan area governance level and feed directly into county and municipal planning processes.

Environmental review support. For major transportation projects requiring a National Environmental Policy Act (NEPA) review, EWG's regional travel demand model provides the traffic forecasting inputs that federal agencies rely on to evaluate project impacts.

Decision boundaries

EWG occupies a coordinating role rather than a regulatory one, which produces specific boundaries in what it can and cannot decide.

EWG has authority to:
- Include or exclude projects from the federally required TIP and MTP
- Certify or withhold air quality conformity for the regional transportation plan
- Allocate certain suballocated federal funds (such as Transportation Alternatives Program dollars) among member jurisdictions
- Publish regional plans and forecasts that carry weight in federal review processes

EWG does not have authority to:
- Override local zoning or land use decisions made by member municipalities or counties
- Direct state transportation departments to build or fund specific projects
- Regulate private development directly
- Govern the operational decisions of Bi-State Development, which runs Metro Transit under a separate bi-state compact

The distinction between EWG and individual county or municipal governments is most visible when a local jurisdiction's preferred project conflicts with regional priorities. EWG's TIP process requires prioritization, and a project ranked low in the regional process may wait years for federal programming even if the local government strongly supports it. Readers navigating local government structure can find a broader orientation to the region at the St. Louis Metro Authority index.

Comparing EWG to a standard county government highlights the difference between a planning coordination body and a general-purpose government. EWG levies no property taxes, employs no police or fire personnel, and administers no direct services to residents. Its leverage is entirely procedural — control over federal planning certification and project programming — but that leverage is substantial given the volume of federal surface transportation dollars flowing into the region annually through MoDOT and IDOT.

References

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