Mason-Dixon RD over Conowingo Creek
FairLancaster County, Pennsylvania · 1.5 MI NW of US 222 · Structure no. 000000000021955
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected November 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 87 ft
- 2 main spans
- Daily traffic
- 75
- 2011 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Mason-Dixon RD over Conowingo Creek is a prestressed concrete box beam or girders - multiple carrying Mason-Dixon RD over Conowingo Creek in Lancaster County, Pennsylvania. It was built in 1967, so it is 58 years old, older than the Pennsylvania average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 75 vehicles a day, roughly 1% of them trucks, projected to reach 100 by 2031. The structure is 87 ft (26.5 m) long and 32 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 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mason-Dixon RD over Conowingo Creek built?
It was built in 1967, making it 58 years old in 2025.
What condition is Mason-Dixon RD over Conowingo Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.
How much traffic does Mason-Dixon RD over Conowingo Creek carry?
About 75 vehicles per day (2011 count), of which roughly 1% are trucks.
How long is Mason-Dixon RD over Conowingo Creek?
The structure is 87 ft (26.5 m) long with a longest span of 46 ft (14 m) and a deck 32 ft wide.
Who owns Mason-Dixon RD over Conowingo Creek?
It is owned by the Town or Township Highway Agency.