US Bridges

Pa Tpk Ramp Ab over Pa Tpk (I-276)

Fair

Montgomery County, Pennsylvania · Norristown Interchange · Structure no. 000000000028161

Built
1954
71 years old, rebuilt 1995
Condition
Fair
inspected May 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
257 ft
3 main spans
Daily traffic
43,330
1993 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk Ramp Ab over Pa Tpk (I-276) is a steel continuous stringer/multi-beam or girder carrying Pa Tpk Ramp Ab over Pa Tpk (I-276) in Montgomery County, Pennsylvania. It was built in 1954 and reconstructed in 1995, 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 43,330 vehicles a day, roughly 5% of them trucks, projected to reach 57,129 by 2030. The structure is 257 ft (78.3 m) long and 59 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesPa Tpk Ramp Ab
CrossesPa Tpk (I-276)
LocationNorristown Interchange
RouteInterstate 276
CountyMontgomery County
StatePennsylvania
Coordinates40.11051, -75.29021
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating88 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 25 or greater
Structure length257 ft (78.3 m)
Longest span124 ft (37.8 m)
Deck width59 ft (18 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,330 (1993)
Projected traffic57,129 by 2030
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.3 mi (23 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa Tpk Ramp Ab over Pa Tpk (I-276) built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1995.

What condition is Pa Tpk Ramp Ab over Pa Tpk (I-276) in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2022.

How much traffic does Pa Tpk Ramp Ab over Pa Tpk (I-276) carry?

About 43,330 vehicles per day (1993 count), of which roughly 5% are trucks.

How long is Pa Tpk Ramp Ab over Pa Tpk (I-276)?

The structure is 257 ft (78.3 m) long with a longest span of 124 ft (37.8 m) and a deck 59 ft wide.

Who owns Pa Tpk Ramp Ab over Pa Tpk (I-276)?

It is owned by the State Toll Authority.