US Bridges

Tyburn Road over Rock Run

Poor

Bucks County, Pennsylvania · Fallsington 38J09 · Structure no. 000000000007184

Built
1954
71 years old
Condition
Poor
inspected May 2024
Type
Tee Beam
Concrete
Length
84 ft
2 main spans
Daily traffic
10,266
2024 count
Owner
State
State Highway Agency

About this bridge

Tyburn Road over Rock Run is a concrete tee beam carrying Tyburn Road over Rock Run in Bucks County, Pennsylvania. It was built in 1954, so it is 71 years old, older than the Pennsylvania average of 54.8 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 10,266 vehicles a day, roughly 32% of them trucks, projected to reach 9,398 by 2032. The structure is 84 ft (25.6 m) long and 72 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesTyburn Road
CrossesRock Run
LocationFallsington 38J09
RouteState Highway 0
CountyBucks County
StatePennsylvania
Coordinates40.18032, -74.8063
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

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.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span38 ft (11.6 m)
Deck width72 ft (21.8 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,266 (2024)
Projected traffic9,398 by 2032
Trucks32%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$622,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Tyburn Road over Rock Run built?

It was built in 1954, making it 71 years old in 2025.

What condition is Tyburn Road over Rock Run 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 May 2024.

How much traffic does Tyburn Road over Rock Run carry?

About 10,266 vehicles per day (2024 count), of which roughly 32% are trucks.

How long is Tyburn Road over Rock Run?

The structure is 84 ft (25.6 m) long with a longest span of 38 ft (11.6 m) and a deck 72 ft wide.

Who owns Tyburn Road over Rock Run?

It is owned by the State Highway Agency.