Post Opening Project Evaluation M1 Junction 25 to 28 Widening - Five Years After Opening Evaluation

This document describes an evaluation of the M1 Junction 25 to 28 Widening project, which was designed to alleviate congestion, enhance journey reliability, and improve road safety by widening a section of the M1 and introducing controlled motorway technology. The evaluation, conducted five years after completion, utilized traffic, safety, economic, and environmental analyses. Results showed reduced journey times, stable traffic flows, and a significant decrease in personal injury collisions, with a Benefit Cost Ratio of 1.7, indicating good value for money. However, there were some environmental concerns, including noise and air quality issues, and challenges with biodiversity measures. The project largely met its objectives and positively impacted the economy, though some results, such as journey time savings and traffic growth, were below expectations due to the economic recession. Environmental outcomes were generally better than predicted, with successful vegetation retention and planting, but some areas required further attention. The scheme was consistent with policy objectives and had a positive safety record, but some aspects, like transport economic efficiency, performed worse than expected. Overall, the project was successful in improving traffic conditions and had a mostly positive impact, with recommendations for improvements in specific areas. **This summary was written by an AI model and therefore should not be considered a definitive summary of the report. If you are aware of inaccuracies, please email evaluation.registry@cabinetoffice.gov.uk.**

Description

• Lead department: Highways England
• Evaluation stage: A complete evaluation report
• Other departments: No other departments listed
• Evaluation types: Value for money evaluation; Impact evaluation
• Impact methods: Generic research method
• Value for money methods: Cost-benefit analysis
• Grant information: This intervention is not distributing funding via a grant
• Government Major Project information: This intervention is not a major project
• Policies: No policies provided

Event Dates

• Event Name: Publication of final results
• Event date: May 2017

Evaluation Costs

• Cost: Not provided

Evaluation sharing

• Link(s) to published report(s): Yes
• Links to evaluation plans: No link provided
• Findings: Not provided
• Permission to share confirmed: Yes