US 18 over Lost Creek
PoorConverse County, Wyoming · Orin JCT - Lusk · Structure no. CEY
- Built
- 1964
- 61 years old
- Condition
- Poor
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 137 ft
- 3 main spans
- Daily traffic
- 2,117
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 18 over Lost Creek is a steel continuous stringer/multi-beam or girder carrying US 18 over Lost Creek in Converse County, Wyoming. It was built in 1964, so it is 61 years old, older than the Wyoming average of 48.4 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 2,117 vehicles a day, roughly 22% of them trucks, projected to reach 2,964 by 2043. The structure is 137 ft (41.8 m) long and 33 ft wide. If it were closed, the detour would be 57.8 mi (93 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 18 over Lost Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is US 18 over Lost Creek 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 January 2025.
How much traffic does US 18 over Lost Creek carry?
About 2,117 vehicles per day (2024 count), of which roughly 22% are trucks.
How long is US 18 over Lost Creek?
The structure is 137 ft (41.8 m) long with a longest span of 51 ft (15.5 m) and a deck 33 ft wide.
Who owns US 18 over Lost Creek?
It is owned by the State Highway Agency.