N Mason ST over BNSF RR
PoorPosted for loadCarroll County, Missouri · S 4 T 52 N R 23 W · Structure no. 14597
- Built
- 1935
- 90 years old
- Condition
- Poor
- inspected February 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 203 ft
- 1 main span
- Daily traffic
- 1,000
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
N Mason ST over BNSF RR is a steel girder and floorbeam system carrying N Mason ST over BNSF RR in Carroll County, Missouri. It was built in 1935, so it is 90 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 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 1,000 vehicles a day, roughly 15% of them trucks, projected to reach 1,100 by 2044. The structure is 203 ft (61.9 m) long and 25 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was N Mason ST over BNSF RR built?
It was built in 1935, making it 90 years old in 2025.
What condition is N Mason ST over BNSF RR 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 February 2024.
How much traffic does N Mason ST over BNSF RR carry?
About 1,000 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is N Mason ST over BNSF RR?
The structure is 203 ft (61.9 m) long with a longest span of 62 ft (18.9 m) and a deck 25 ft wide.
Who owns N Mason ST over BNSF RR?
It is owned by the County Highway Agency and maintained by the City or Municipal Highway Agency.