CO RD NW 621 over N Fk Blackwater Rv
GoodJohnson County, Missouri · S 2 T 46 N R 27 W · Structure no. 15264
- Built
- 1900
- 125 years old, rebuilt 1987
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 195 ft
- 3 main spans
- Daily traffic
- 93
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
CO RD NW 621 over N Fk Blackwater Rv is a prestressed concrete continuous stringer/multi-beam or girder carrying CO RD NW 621 over N Fk Blackwater Rv in Johnson County, Missouri. It was built in 1900 and reconstructed in 1987, so it is 125 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 93 vehicles a day, roughly 10% of them trucks, projected to reach 149 by 2043. The structure is 195 ft (59.4 m) long and 27 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CO RD NW 621 over N Fk Blackwater Rv built?
It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1987.
What condition is CO RD NW 621 over N Fk Blackwater Rv 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 November 2024.
How much traffic does CO RD NW 621 over N Fk Blackwater Rv carry?
About 93 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is CO RD NW 621 over N Fk Blackwater Rv?
The structure is 195 ft (59.4 m) long with a longest span of 64 ft (19.5 m) and a deck 27 ft wide.
Who owns CO RD NW 621 over N Fk Blackwater Rv?
It is owned by the County Highway Agency.