Rapid urbanization and the aging of large-scale building stocks have created a critical disconnection between strategic urban planning and physical structural realities. This study introduces a multi-dimensional resilience framework to evaluate the structural integrity and socio-economic exposure of Riga’s urban fabric at the parcel level. By integrating high-resolution wear-out data with a normalized Economic Priority Index (EPI), the study analyzes the distribution of 2405 buildings identified in the terminal wear-out phase of the Bathtub Curve reliability model. The results reveal that 92.7% of critically vulnerable buildings fall outside the scope of the city’s RTIAN 2030 strategic intervention framework, including the majority of high-risk structures supporting 13,416 business units and 646,033 residents. Spatial intersection analysis further demonstrates that contemporary modernization initiatives, including digital pilot zones, effectively bypass 98% of these critical structural hotspots. Predictive scenario analysis confirms that without a strategic reorientation toward a proactive, reliability-based monitoring framework, these excluded corridors face an exponential escalation of structural risk. Specifically, this study examines the urban spatial resilience of Riga’s building stock through the integrated PLE-Bathtub Curve framework, evaluates the spatial alignment of RTIAN 2030 with identified vulnerability zones, and assesses how effectively Smart City pilot initiatives target structurally vulnerable clusters defined by the Economic Priority Index (EPI). This research provides a replicable diagnostic framework, calibrated for post-socialist urban contexts, to support municipal authorities in realigning investment priorities with empirical physical vulnerabilities, ensuring long-term metropolitan continuity.

Historical slender steel towers designed before modern fatigue provisions require evidence-based procedures to assess their remaining fatigue life under wind action. This study presents a time-domain fatigue life estimation procedure and applies it to the 368.5 m Riga TV tower, the tallest structure in the Baltic states, completed in 1989. Because the tower’s materials and construction predate current European standards and its height-varying cross-section and closely spaced modes are not well represented by the simplified structural factor of EN 1991-1-4, synthetic wind load histories were generated according to EN 1991-1-4 and the Kaimal turbulence spectrum, including across-wind vortex shedding represented by a simplified lock-in model, and applied to a parametric global finite element model and refined local models of the critical details. The natural frequencies of the global model agree with those identified from geophone and fiber-optic strain measurements, and the computed bending-stress ranges follow the measured trend over the 2–14 m/s range of recorded mean wind velocities. Fatigue damage was evaluated from rainflow-counted stress ranges with the Palmgren–Miner rule and the S–N curve of EN 1993-1-9. For the assessed weld detail the damage is D = 0.081 for a 50-year reference period and 0.060 over the 37 years of service to date, dominated by across-wind oscillations in the second-mode lock-in range at 7–9 m/s. The main limitations are the simplified treatment of lock-in without aerodynamic damping, the assumed structural damping and weld detail category, and the single meteorological record used for the wind exposure; their influence on the result is discussed. The procedure provides a practical, measurement-supported basis for the fatigue assessment of historical steel towers.