Imperial Dam Road over Arizona Ggmc Sluiceway
Yuma County, Arizona · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Imperial Dam Road over Arizona Ggmc Sluiceway in Yuma County, Arizona, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1975 and reconstructed in 2019, making it 50 years old at the 2025 inventory.
- It carries about 200 vehicles a day (traffic count year 2017).
- It is one of 133 of the 262 inventoried bridges in Yuma County rated good (50.8%); 6 (2.3%) 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 48-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 → (32.87523, -114.46238)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 184 ft |
| Location | 7 mi west of US Hwy 95 |
| NBI structure number | 0304-0002 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2023 |
| Inspection interval (item 91) | 48 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Arizona department of transportation.
Busiest bridges in Yuma County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| 16th St over UPRR | 1951 | 41,102 | Fair |
| US 95 over I-8 | 1970 | 35,771 | Fair |
| 24th Street over Yuma East Main Canal | 1977 | 31,727 | Fair |
| Main Street over Main Drain | 1999 | 24,767 | Good |
| US 95 over East Main Canal | 1969 | 22,266 | Fair |
| 32nd St over East Main Canal | 1984 | 21,418 | Good |
All bridges nearby: Yuma County, AZ bridge conditions · every bridge in Yuma County · Arizona bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.