US Bridges

Mid-County Exwy.Sb over Schuylkill Exway;ramps

Fair

Montgomery County, Pennsylvania · Conshohocken INTER3367J10 · Structure no. 000000000027467

Built
1977
48 years old, rebuilt 2011
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
570 ft
5 main spans
Daily traffic
58,479
2024 count
Owner
State
State Highway Agency

About this bridge

Mid-County Exwy.Sb over Schuylkill Exway;ramps is a steel continuous stringer/multi-beam or girder carrying Mid-County Exwy.Sb over Schuylkill Exway;ramps in Montgomery County, Pennsylvania. It was built in 1977 and reconstructed in 2011, so it is 48 years old, younger 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 58,479 vehicles a day, roughly 9% of them trucks, projected to reach 93,194 by 2032. The structure is 570 ft (173.7 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMid-County Exwy.Sb
CrossesSchuylkill Exway;ramps
LocationConshohocken INTER3367J10
RouteInterstate 476
CountyMontgomery County
StatePennsylvania
Coordinates40.06471, -75.32164
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length570 ft (173.7 m)
Longest span142 ft (43.3 m)
Deck width56 ft (17.1 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58,479 (2024)
Projected traffic93,194 by 2032
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$987,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mid-County Exwy.Sb over Schuylkill Exway;ramps built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2011.

What condition is Mid-County Exwy.Sb over Schuylkill Exway;ramps 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 February 2023.

How much traffic does Mid-County Exwy.Sb over Schuylkill Exway;ramps carry?

About 58,479 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Mid-County Exwy.Sb over Schuylkill Exway;ramps?

The structure is 570 ft (173.7 m) long with a longest span of 142 ft (43.3 m) and a deck 56 ft wide.

Who owns Mid-County Exwy.Sb over Schuylkill Exway;ramps?

It is owned by the State Highway Agency.