Co Rd G36 over US 218
Washington County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Co Rd G36 over US 218 in Washington County, Iowa, 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 2008, making it 17 years old at the 2025 inventory.
- It carries about 2,010 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 92 of the 207 inventoried bridges in Washington County rated fair (44.4%); 33 (15.9%) are rated poor.
- 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 → (41.33706, -91.55254)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 8 | Very good condition |
| Substructure | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 240 ft |
| Location | At the Jct. of SR G36 |
| NBI structure number | 000000000609910 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Washington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 218 over Whiskey Run Creek | 1984 | 14,900 | Fair |
| US 218 over Stream | 1984 | 14,900 | Fair |
| US 218 over Drainage | 1997 | 13,800 | Good |
| US 218 over Big Slough Creek | 1997 | 12,400 | Good |
| SB US 218 over Goose Creek | 1984 | 7,600 | Fair |
| SB US 218 over Davis Creek | 1984 | 7,600 | Fair |
All bridges nearby: Washington County, IA bridge conditions · every bridge in Washington County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.