US Bridges

Mid-County Exwy.Sb over Lancaster Ave / 3477-D5

Good

Delaware County, Pennsylvania · Lancaster Ave.Int. 14H10 · Structure no. 000000000015145

Built
1990
35 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
181 ft
1 main span
Daily traffic
48,871
2024 count
Owner
State
State Highway Agency

About this bridge

Mid-County Exwy.Sb over Lancaster Ave / 3477-D5 is a steel stringer/multi-beam or girder carrying Mid-County Exwy.Sb over Lancaster Ave / 3477-D5 in Delaware County, Pennsylvania. It was built in 1990, so it is 35 years old, younger 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 48,871 vehicles a day, roughly 10% of them trucks, projected to reach 61,268 by 2032. The structure is 181 ft (55.2 m) long and 61 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMid-County Exwy.Sb
CrossesLancaster Ave / 3477-D5
LocationLancaster Ave.Int. 14H10
RouteInterstate 476
CountyDelaware County
StatePennsylvania
Coordinates40.03687, -75.35553
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating79 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length181 ft (55.2 m)
Longest span175 ft (53.3 m)
Deck width61 ft (18.7 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,871 (2024)
Projected traffic61,268 by 2032
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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.Sb over Lancaster Ave / 3477-D5 built?

It was built in 1990, making it 35 years old in 2025.

What condition is Mid-County Exwy.Sb over Lancaster Ave / 3477-D5 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 October 2023.

How much traffic does Mid-County Exwy.Sb over Lancaster Ave / 3477-D5 carry?

About 48,871 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Mid-County Exwy.Sb over Lancaster Ave / 3477-D5?

The structure is 181 ft (55.2 m) long with a longest span of 175 ft (53.3 m) and a deck 61 ft wide.

Who owns Mid-County Exwy.Sb over Lancaster Ave / 3477-D5?

It is owned by the State Highway Agency.