SH 121 over Watters Branch

Collin County, Texas · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

• SH 121 over Watters Branch in Collin County, Texas, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
• It was built in 2005, making it 20 years old at the 2025 inventory.
• It carries about 76,084 vehicles a day (traffic count year 2020).
• It is one of 770 of the 1,139 inventoried bridges in Collin County rated good (67.6%); 1 (0.1%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• Its condition class and component ratings are unchanged from the 2024 inventory.
• Its most recent inspection on record is dated October 2023, on a 24-month routine inspection cycle.
• A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

View this bridge on a map → (33.13684, -96.70008)

Component ratings

Bridge details

Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.

Busiest bridges in Collin County

All bridges nearby: Collin County, TX bridge conditions · every bridge in Collin County · Texas bridges.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.