Mo 13 N over Dry Sac Rvr
PoorPolk County, Missouri · S 9 T 31 N R 22 W · Structure no. 2329
- Built
- 1970
- 55 years old, rebuilt 2005
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 283 ft
- 7 main spans
- Daily traffic
- 10,782
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 13 N over Dry Sac Rvr is a steel continuous stringer/multi-beam or girder carrying Mo 13 N over Dry Sac Rvr in Polk County, Missouri. It was built in 1970 and reconstructed in 2005, 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 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.
It carries about 10,782 vehicles a day, roughly 16% of them trucks, projected to reach 18,869 by 2044. The structure is 283 ft (86.3 m) long and 47 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Mo 13 N over Dry Sac Rvr built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2005.
What condition is Mo 13 N over Dry Sac Rvr 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 Mo 13 N over Dry Sac Rvr carry?
About 10,782 vehicles per day (2024 count), of which roughly 16% are trucks.
How long is Mo 13 N over Dry Sac Rvr?
The structure is 283 ft (86.3 m) long with a longest span of 42 ft (12.8 m) and a deck 47 ft wide.
Who owns Mo 13 N over Dry Sac Rvr?
It is owned by the State Highway Agency.