Sp 421 over Zarzamora Creek
Good Condition45 years old28,144 vehicles/day
Location
| State | Texas |
| County | Bexar |
| Location | 0.2 Mi SE Of IH 410 |
| Carries | Sp 421 |
| Crosses | Zarzamora Creek |
| Coordinates | 29.48147, -98.59706 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 7 (Good) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 70.9 ft (21.6 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Width | 98.8 ft (30.1 m) |
| Deck Area | 650.2 sq m |
| Main Spans | 6 |
| Year Built | 1981 (reconstructed 2002) |
Traffic
| Avg Daily Traffic | 28,144 (2020) |
| Truck Traffic | 7% |
| Lanes On Bridge | 7 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 150150029110187 |