N3480 over Lake
PoorClosed to trafficPawnee County, Oklahoma · 2.3S of S.H. 18/S.H. 15 · Structure no. 283830000000000
- Built
- 1920
- 105 years old
- Condition
- Poor
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 29 ft
- 1 main span
- Daily traffic
- 50
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
N3480 over Lake is a steel stringer/multi-beam or girder carrying N3480 over Lake in Pawnee County, Oklahoma. It was built in 1920, so it is 105 years old, older than the Oklahoma average of 47.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 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: closed to all traffic.
It carries about 50 vehicles a day, roughly 5% of them trucks, projected to reach 80 by 2042. The structure is 29 ft (8.7 m) long and 15 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 N3480 over Lake built?
It was built in 1920, making it 105 years old in 2025.
What condition is N3480 over Lake 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 August 2023.
How much traffic does N3480 over Lake carry?
About 50 vehicles per day (2022 count), of which roughly 5% are trucks.
How long is N3480 over Lake?
The structure is 29 ft (8.7 m) long with a longest span of 28 ft (8.4 m) and a deck 15 ft wide.
Who owns N3480 over Lake?
It is owned by the County Highway Agency.