US Bridges

SR 504-PA 504 over Bush Hollow

Fair

Centre County, Pennsylvania · Plum Grove · Structure no. 000000000009453

Built
1910
115 years old, rebuilt 1953
Condition
Fair
inspected June 2024
Type
Arch - Deck
Concrete
Length
32 ft
1 main span
Daily traffic
3,806
2023 count
Owner
State
State Highway Agency

About this bridge

SR 504-PA 504 over Bush Hollow is a concrete arch - deck carrying SR 504-PA 504 over Bush Hollow in Centre County, Pennsylvania. It was built in 1910 and reconstructed in 1953, so it is 115 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 6 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 3,806 vehicles a day, roughly 8% of them trucks, projected to reach 4,777 by 2044. The structure is 32 ft (9.8 m) long and 42 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

Open in Google Maps
CarriesSR 504-PA 504
CrossesBush Hollow
LocationPlum Grove
RouteU.S. Route 2200
CountyCentre County
StatePennsylvania
Coordinates40.91707, -77.85812
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,806 (2023)
Projected traffic4,777 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$395,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 504-PA 504 over Bush Hollow built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1953.

What condition is SR 504-PA 504 over Bush Hollow 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 June 2024.

How much traffic does SR 504-PA 504 over Bush Hollow carry?

About 3,806 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 504-PA 504 over Bush Hollow?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 42 ft wide.

Who owns SR 504-PA 504 over Bush Hollow?

It is owned by the State Highway Agency.