Mo 73 S over Little Niangua CR
PoorDallas County, Missouri · S 21 T 36 N R 19 W · Structure no. 4790
- Built
- 1925
- 100 years old
- Condition
- Poor
- inspected October 2023
- Type
- Tee Beam
- Concrete
- Length
- 210 ft
- 5 main spans
- Daily traffic
- 2,052
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Mo 73 S over Little Niangua CR is a concrete tee beam carrying Mo 73 S over Little Niangua CR in Dallas County, Missouri. It was built in 1925, so it is 100 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.
It carries about 2,052 vehicles a day, roughly 16% of them trucks, projected to reach 3,386 by 2044. The structure is 210 ft (64 m) long and 23 ft wide. If it were closed, the detour would be 24.2 mi (39 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 | 4 Poor | Advanced section loss, deterioration, 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 Mo 73 S over Little Niangua CR built?
It was built in 1925, making it 100 years old in 2025.
What condition is Mo 73 S over Little Niangua 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 October 2023.
How much traffic does Mo 73 S over Little Niangua CR carry?
About 2,052 vehicles per day (2024 count), of which roughly 16% are trucks.
How long is Mo 73 S over Little Niangua CR?
The structure is 210 ft (64 m) long with a longest span of 43 ft (13 m) and a deck 23 ft wide.
Who owns Mo 73 S over Little Niangua CR?
It is owned by the State Highway Agency.