US Bridges

Pa Tpk (I-476) over S. Valley Forge RD

Good

Montgomery County, Pennsylvania · 1.23 MI South of SR 22 · Structure no. 000000000055970

Built
2018
7 years old
Condition
Good
inspected August 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
65,329
2004 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-476) over S. Valley Forge RD is a prestressed concrete box beam or girders - multiple carrying Pa Tpk (I-476) over S. Valley Forge RD in Montgomery County, Pennsylvania. It was built in 2018, so it is 7 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 65,329 vehicles a day, roughly 16% of them trucks, projected to reach 94,986 by 2030. The structure is 72 ft (21.9 m) long and 126 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesPa Tpk (I-476)
CrossesS. Valley Forge RD
Location1.23 MI South of SR 22
RouteInterstate 476
CountyMontgomery County
StatePennsylvania
Coordinates40.21647, -75.32742
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating41.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length72 ft (21.9 m)
Longest span70 ft (21.3 m)
Deck width126 ft (38.5 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65,329 (2004)
Projected traffic94,986 by 2030
Trucks16%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk (I-476) over S. Valley Forge RD built?

It was built in 2018, making it 7 years old in 2025.

What condition is Pa Tpk (I-476) over S. Valley Forge RD 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 August 2022.

How much traffic does Pa Tpk (I-476) over S. Valley Forge RD carry?

About 65,329 vehicles per day (2004 count), of which roughly 16% are trucks.

How long is Pa Tpk (I-476) over S. Valley Forge RD?

The structure is 72 ft (21.9 m) long with a longest span of 70 ft (21.3 m) and a deck 126 ft wide.

Who owns Pa Tpk (I-476) over S. Valley Forge RD?

It is owned by the State Toll Authority.