US Bridges

Ramp D on over Rock Run

Poor

Bucks County, Pennsylvania · US 1;US 13 INTERCH.38J06 · Structure no. 000000000007771

Built
1966
59 years old
Condition
Poor
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
1,632
2024 count
Owner
State
State Highway Agency

About this bridge

Ramp D on over Rock Run is a prestressed concrete box beam or girders - multiple carrying Ramp D on over Rock Run in Bucks County, Pennsylvania. It was built in 1966, so it is 59 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 1,632 vehicles a day, roughly 8% of them trucks, projected to reach 1,893 by 2032. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRamp D on
CrossesRock Run
LocationUS 1;US 13 INTERCH.38J06
RouteState Highway 0
CountyBucks County
StatePennsylvania
Coordinates40.19878, -74.80211
Functional classUrban Principal Arterial - Other Freeway or Expressway

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
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88 US tons
Inventory rating33 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,632 (2024)
Projected traffic1,893 by 2032
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ramp D on over Rock Run built?

It was built in 1966, making it 59 years old in 2025.

What condition is Ramp D on 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 2023.

How much traffic does Ramp D on over Rock Run carry?

About 1,632 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Ramp D on over Rock Run?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m).

Who owns Ramp D on over Rock Run?

It is owned by the State Highway Agency.