Rt Jj S over Brock CR
Washington County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rt Jj S over Brock CR in Washington County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1963, making it 62 years old at the 2025 inventory.
- It carries about 311 vehicles a day (traffic count year 2024).
- Its listed owner is the state highway agency.
- It is one of 91 of the 156 inventoried bridges in Washington County rated fair (58.3%); 17 (10.9%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2024, 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 → (37.77714, -90.85961)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 179 ft |
| Location | S 3321 T 35 N R 2 E |
| NBI structure number | 8324 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | June 2024 |
| 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 Missouri department of transportation.
Busiest bridges in Washington County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mo 21 S over UP RR | 1993 | 7,409 | Good |
| Mo 21 S over Old Mines CR | 1933 | 7,409 | Fair |
| Mo 8 E over Breton CR | 2002 | 6,972 | Fair |
| Mo 8 E over Br Mill CR | 1968 | 6,462 | Fair |
| Mo 8 E over UP RR | 1968 | 6,462 | Poor |
| Mo 21 S over Old Mines CR | 2006 | 5,370 | Good |
All bridges nearby: Washington County, MO bridge conditions · every bridge in Washington County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.