Richland RD over N Fk Grindstone CR
PoorPosted for loadBoone County, Missouri · S 15 T 48 N R 12 W · Structure no. 21853
- Built
- 1970
- 55 years old
- Condition
- Poor
- inspected December 2024
- Type
- Channel Beam
- Concrete
- Length
- 47 ft
- 1 main span
- Daily traffic
- 500
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Richland RD over N Fk Grindstone CR is a concrete channel beam carrying Richland RD over N Fk Grindstone CR in Boone County, Missouri. It was built in 1970, so it is 55 years old, older 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 4 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 500 vehicles a day, roughly 10% of them trucks, projected to reach 875 by 2043. The structure is 47 ft (14.3 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Richland RD over N Fk Grindstone CR built?
It was built in 1970, making it 55 years old in 2025.
What condition is Richland RD over N Fk Grindstone CR 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 December 2024.
How much traffic does Richland RD over N Fk Grindstone CR carry?
About 500 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Richland RD over N Fk Grindstone CR?
The structure is 47 ft (14.3 m) long with a longest span of 45 ft (13.7 m) and a deck 26 ft wide.
Who owns Richland RD over N Fk Grindstone CR?
It is owned by the City or Municipal Highway Agency.