US Bridges

West Rock Road over Threemile Run

Good

Bucks County, Pennsylvania · 0.9 M W SR563 Adc 2808-E6 · Structure no. 000000000007516

Built
1979
46 years old, rebuilt 2022
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
79 ft
1 main span
Daily traffic
250
2001 count
Owner
County
County Highway Agency

About this bridge

West Rock Road over Threemile Run is a prestressed concrete box beam or girders - multiple carrying West Rock Road over Threemile Run in Bucks County, Pennsylvania. It was built in 1979 and reconstructed in 2022, so it is 46 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 250 vehicles a day, projected to reach 35 by 2011. The structure is 79 ft (24.1 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWest Rock Road
CrossesThreemile Run
Location0.9 M W SR563 Adc 2808-E6
RouteCity Street 0
CountyBucks County
StatePennsylvania
Coordinates40.40197, -75.28361
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating45.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span76 ft (23.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2001)
Projected traffic35 by 2011
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$203,000
NavigationNo navigation control on waterway

Frequently asked questions

When was West Rock Road over Threemile Run built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 2022.

What condition is West Rock Road over Threemile Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does West Rock Road over Threemile Run carry?

About 250 vehicles per day (2001 count).

How long is West Rock Road over Threemile Run?

The structure is 79 ft (24.1 m) long with a longest span of 76 ft (23.2 m) and a deck 31 ft wide.

Who owns West Rock Road over Threemile Run?

It is owned by the County Highway Agency.