US Bridges

Pa Tpk Ramp N&o over Pa Tpk (I-276)

Good

Montgomery County, Pennsylvania · Mid-County Interchange · Structure no. 000000000028171

Built
1992
33 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
410 ft
3 main spans
Daily traffic
57,897
1993 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk Ramp N&o over Pa Tpk (I-276) is a steel continuous stringer/multi-beam or girder carrying Pa Tpk Ramp N&o over Pa Tpk (I-276) in Montgomery County, Pennsylvania. It was built in 1992, so it is 33 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 57,897 vehicles a day, roughly 9% of them trucks, projected to reach 61,426 by 2030. The structure is 410 ft (125 m) long and 78 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesPa Tpk Ramp N&o
CrossesPa Tpk (I-276)
LocationMid-County Interchange
RouteInterstate 476
CountyMontgomery County
StatePennsylvania
Coordinates40.1124, -75.27798
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length410 ft (125 m)
Longest span220 ft (67.1 m)
Deck width78 ft (23.9 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,897 (1993)
Projected traffic61,426 by 2030
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk Ramp N&o over Pa Tpk (I-276) built?

It was built in 1992, making it 33 years old in 2025.

What condition is Pa Tpk Ramp N&o over Pa Tpk (I-276) 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 May 2024.

How much traffic does Pa Tpk Ramp N&o over Pa Tpk (I-276) carry?

About 57,897 vehicles per day (1993 count), of which roughly 9% are trucks.

How long is Pa Tpk Ramp N&o over Pa Tpk (I-276)?

The structure is 410 ft (125 m) long with a longest span of 220 ft (67.1 m) and a deck 78 ft wide.

Who owns Pa Tpk Ramp N&o over Pa Tpk (I-276)?

It is owned by the State Toll Authority.