US Bridges

Mid-County Exwy.Nb over Clyde Road

Good

Delaware County, Pennsylvania · Radnor Township 25H01 · Structure no. 000000000015127

Built
1967
58 years old, rebuilt 1987
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
44,192
2024 count
Owner
State
State Highway Agency

About this bridge

Mid-County Exwy.Nb over Clyde Road is a prestressed concrete box beam or girders - multiple carrying Mid-County Exwy.Nb over Clyde Road in Delaware County, Pennsylvania. It was built in 1967 and reconstructed in 1987, so it is 58 years old, older 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 44,192 vehicles a day, roughly 10% of them trucks, projected to reach 67,047 by 2032. The structure is 56 ft (17.1 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMid-County Exwy.Nb
CrossesClyde Road
LocationRadnor Township 25H01
RouteInterstate 476
Coordinates40.01458, -75.35708
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 inspectionNovember 2024
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 rating67 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width55 ft (16.8 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,192 (2024)
Projected traffic67,047 by 2032
Trucks10%
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mid-County Exwy.Nb over Clyde Road built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1987.

What condition is Mid-County Exwy.Nb over Clyde Road 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 November 2024.

How much traffic does Mid-County Exwy.Nb over Clyde Road carry?

About 44,192 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mid-County Exwy.Nb over Clyde Road?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 55 ft wide.

Who owns Mid-County Exwy.Nb over Clyde Road?

It is owned by the State Highway Agency.