US Bridges

Old Gulph Road over Mid-County Expressway

Fair

Montgomery County, Pennsylvania · Lower Merion 3477G02 · Structure no. 000000000027743

Built
1974
51 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
225 ft
2 main spans
Daily traffic
8,834
2024 count
Owner
State
State Highway Agency

About this bridge

Old Gulph Road over Mid-County Expressway is a prestressed concrete stringer/multi-beam or girder carrying Old Gulph Road over Mid-County Expressway in Montgomery County, Pennsylvania. It was built in 1974, so it is 51 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 5 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 8,834 vehicles a day, roughly 7% of them trucks, projected to reach 10,012 by 2032. The structure is 225 ft (68.6 m) long and 65 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesOld Gulph Road
CrossesMid-County Expressway
LocationLower Merion 3477G02
RouteState Highway 0
CountyMontgomery County
StatePennsylvania
Coordinates40.05611, -75.33444
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79 US tons
Inventory rating29 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span108 ft (32.9 m)
Deck width65 ft (19.7 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,834 (2024)
Projected traffic10,012 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Old Gulph Road over Mid-County Expressway built?

It was built in 1974, making it 51 years old in 2025.

What condition is Old Gulph Road over Mid-County Expressway 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 December 2022.

How much traffic does Old Gulph Road over Mid-County Expressway carry?

About 8,834 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Old Gulph Road over Mid-County Expressway?

The structure is 225 ft (68.6 m) long with a longest span of 108 ft (32.9 m) and a deck 65 ft wide.

Who owns Old Gulph Road over Mid-County Expressway?

It is owned by the State Highway Agency.