CO RD NW 400 over Br of Blackwater R
GoodJohnson County, Missouri · S 1 T 47 N R 28 W · Structure no. 28248
- Built
- 1998
- 27 years old
- Condition
- Good
- inspected November 2024
- Type
- Slab
- Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 30
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
CO RD NW 400 over Br of Blackwater R is a concrete slab carrying CO RD NW 400 over Br of Blackwater R in Johnson County, Missouri. It was built in 1998, so it is 27 years old, younger 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 48 by 2043. The structure is 30 ft (9.1 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CO RD NW 400 over Br of Blackwater R built?
It was built in 1998, making it 27 years old in 2025.
What condition is CO RD NW 400 over Br of Blackwater R 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 400 over Br of Blackwater R carry?
About 30 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is CO RD NW 400 over Br of Blackwater R?
The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 23 ft wide.
Who owns CO RD NW 400 over Br of Blackwater R?
It is owned by the County Highway Agency.