Old Irondale RD over Flat Rvr
GoodSt. Francois County, Missouri · S 28 T 36 N R 4 E · Structure no. 15770
- Built
- 1930
- 95 years old, rebuilt 1991
- Condition
- Good
- inspected December 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 55 ft
- 2 main spans
- Daily traffic
- 40
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Old Irondale RD over Flat Rvr is a prestressed concrete slab carrying Old Irondale RD over Flat Rvr in St. Francois County, Missouri. It was built in 1930 and reconstructed in 1991, so it is 95 years old, older than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 40 vehicles a day, roughly 10% of them trucks, projected to reach 60 by 2043. The structure is 55 ft (16.8 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Irondale RD over Flat Rvr built?
It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1991.
What condition is Old Irondale RD over Flat Rvr in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.
How much traffic does Old Irondale RD over Flat Rvr carry?
About 40 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Old Irondale RD over Flat Rvr?
The structure is 55 ft (16.8 m) long with a longest span of 24 ft (7.3 m) and a deck 23 ft wide.
Who owns Old Irondale RD over Flat Rvr?
It is owned by the County Highway Agency.