Mill Rd over Royal River
Cumberland County, Maine · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mill Rd over Royal River in Cumberland County, Maine, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1969, making it 56 years old at the 2025 inventory.
- It carries about 1,240 vehicles a day (traffic count year 2016).
- Its listed owner is the state highway agency.
- It is one of 216 of the 344 inventoried bridges in Cumberland County rated fair (62.8%); 35 (10.2%) 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 July 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (43.86774, -70.26072)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 74 ft |
| Location | 1.2 Mi W Jct 231 |
| NBI structure number | 6156 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| Inspection interval (item 91) | 24 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 Maine department of transportation.
Busiest bridges in Cumberland County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 295 NB over Back Bay (atlantic O) | 1960 | 42,190 | Fair |
| I 295 SB over US1 Forest Ave | 1973 | 37,920 | Fair |
| I-95 over Nonesuch River | 1947 | 37,280 | Good |
| I 295 SB over St James Street | 1973 | 36,970 | Fair |
| I 295 SB over Ptrr | 1972 | 36,970 | Fair |
| I 295 SB over St John Steet | 1972 | 36,970 | Fair |
All bridges nearby: Cumberland County, ME bridge conditions · every bridge in Cumberland County · Maine bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.