It has a load capacity of 40,000lbs. Loaded 18âwheeler trucks will exceed capacity. Average: an 18âwheel tractorât
PROPOSED HEIGHTS WALMART SUPERCENTER: Kimley‐Horn Traffic Impact Analysis BRIDGE CAPACITY The Yale Street bridge, just south of the IH‐10 is a load zoned bridge. It has a load capacity of 40,000lbs. Loaded 18‐wheeler trucks will exceed capacity. Average: an 18‐wheel tractor‐trailer tare weight (when empty) is 35,000lbs. Cars/SUVs weigh 4‐5,000lbs. Traffic weights in excess of 40,000 could cause structural damage. TRUCK ROUTES A Walmart Supercenter often has between seven and nine tractor‐trailer deliveries daily, plus one or two smaller trucks delivering products from vendors. Truckers will take the most efficient route over the Yale St. bridge. Operational agreements specifying alternate delivery routes are unenforceable by the City, absent some form of consideration. They are very difficult to police and enforce. To ensure public safety, the developer should be required to structurally upgrade the Yale Street bridge. FAILING GRADES The final Kimley‐Horn report projects an F Level of Service at IH‐10 WESTBOUND @ YALE ST. This is the major intersection serving the development. What does F mean? F = Unstable traffic flow. Heavy congestion. Traffic moves in forced flow condition. Average delays greater than one minute highly probable. Total breakdown.* VERIFYING FINDINGS The final Kimley‐Horn evidences incomplete data for total traffic volumes. The preliminary Kimley‐Horn report showed 3,000 more AM/PM trips than the final report’s calculations. The only way our analysis was able to recreate their findings, was to drop out volume data. OUR TRAFFIC DATA ANALYSIS Using Kimley‐Horn’s preliminary data, our Synchro reports showed F Levels of Service at most intersections. We need to review Kimley‐Horn’s complete, detailed Synchro data that informed their final TIA. We will examine/map the data to ensure all volumes are included and verify Level of Service conclusions. 380 AGREEMENT COMES UP SHORT Ainbinder has received 380 funds to mitigate impacts and upgrade infrastructure around the site. Kimley‐Horn has rated the main intersection at the site as FAILING before and after construction. They plan no mitigations to improve service beyond the minimum requirement. Which means, the level of service will still be failing. The rationale behind the 380 agreement was that the City would be able to “get out in front” of development impacts and hold the developer to higher standards than without the agreement. Setting the benchmark Level of Service at FAIL and maintaining FAIL is not acceptable. ADJACENT DEVELOPMENT WITH MORE TRAFFIC? The Kimley‐Horn TIA does not appear to evidence inclusion of traffic projections for a competitive retail site adjacent to the proposed Walmart Supercenter site. This retail development will be 65,000 sq.ft. with 345 parking spaces. This site projects a completion date of Fall 2011. * Highway Capacity Manual 2000, Transportation Research Board. (3) “Sonora Walmart Expansion Project: Draft Environmental Impact Report,” prepared for the City of Sonora Department of Community Development by Michael Brandman Associates, December, 17 2009.
TRAFFIC BITES 1. BRIDGE FAILURE Walmart Supercenters need seven to nine semi‐trailer deliveries every day. Loaded 18‐wheelers exceed the Yale St. bridges weight capacity. The bridge must be structurally upgraded. Inevitably, with all this semi‐trailer traffic , trucks will make a mistake and damage the bridge. 2. PUBLIC PAYS FOR FAILING STANDARDS The main intersection serving the development is graded ‘F’. Ainbinder should not be allowed to blame TxDOT for traffic problems and leave this intersection as failing. If they are going to get taxpayer dollars, they should be required to do more than the minimum standard. 3. 380 CONTROLS? The City promised that the 380 agreement money given to the developer would give the City more control over the road improvements. If the City approves the TIA, the 380 agreement would have made no difference in terms of improving traffic conditions. It would have just shifted the costs from the developer to a community that does not want a big‐box store. 4. INSULTS & OMISSIONS After being called names by City officials, the public does not trust the City to adequately review the developer’s TIA. The developer and the City have yet to address the bridge load capacity issue. We cannot review TIA findings because it was submitted with incomplete data. We have requested complete data but have not heard anything back.