US Bridges

Mid-County Exwy.Nb over Matsonford/Dehaven Rds.

Fair

Montgomery County, Pennsylvania · West Conshohocken 3367J10 · Structure no. 000000000027469

Built
1976
49 years old, rebuilt 2011
Condition
Fair
inspected September 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
235 ft
3 main spans
Daily traffic
57,500
2024 count
Owner
State
State Highway Agency

About this bridge

Mid-County Exwy.Nb over Matsonford/Dehaven Rds. is a prestressed concrete stringer/multi-beam or girder carrying Mid-County Exwy.Nb over Matsonford/Dehaven Rds. in Montgomery County, Pennsylvania. It was built in 1976 and reconstructed in 2011, so it is 49 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 57,500 vehicles a day, roughly 9% of them trucks, projected to reach 92,978 by 2032. The structure is 235 ft (71.6 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMid-County Exwy.Nb
CrossesMatsonford/Dehaven Rds.
LocationWest Conshohocken 3367J10
RouteInterstate 476
CountyMontgomery County
StatePennsylvania
Coordinates40.06739, -75.32116
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2022
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 rating88 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length235 ft (71.6 m)
Longest span106 ft (32.3 m)
Deck width56 ft (17.1 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57,500 (2024)
Projected traffic92,978 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$441,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mid-County Exwy.Nb over Matsonford/Dehaven Rds. built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2011.

What condition is Mid-County Exwy.Nb over Matsonford/Dehaven Rds. 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 September 2022.

How much traffic does Mid-County Exwy.Nb over Matsonford/Dehaven Rds. carry?

About 57,500 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Mid-County Exwy.Nb over Matsonford/Dehaven Rds.?

The structure is 235 ft (71.6 m) long with a longest span of 106 ft (32.3 m) and a deck 56 ft wide.

Who owns Mid-County Exwy.Nb over Matsonford/Dehaven Rds.?

It is owned by the State Highway Agency.