CO RD NW 1771 over Br S Fk Blackwater
PoorPosted for loadJohnson County, Missouri · S 13 T 46 N R 29 W · Structure no. 21049
- Built
- 1989
- 36 years old
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 20 ft
- 1 main span
- Daily traffic
- 110
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
CO RD NW 1771 over Br S Fk Blackwater is a steel stringer/multi-beam or girder carrying CO RD NW 1771 over Br S Fk Blackwater in Johnson County, Missouri. It was built in 1989, so it is 36 years old, younger than the Missouri average of 45.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 110 vehicles a day, roughly 10% of them trucks, projected to reach 176 by 2043. The structure is 20 ft (6.1 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was CO RD NW 1771 over Br S Fk Blackwater built?
It was built in 1989, making it 36 years old in 2025.
What condition is CO RD NW 1771 over Br S Fk Blackwater in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.
How much traffic does CO RD NW 1771 over Br S Fk Blackwater carry?
About 110 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is CO RD NW 1771 over Br S Fk Blackwater?
The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 23 ft wide.
Who owns CO RD NW 1771 over Br S Fk Blackwater?
It is owned by the County Highway Agency.