US Bridges

Walnut Road (T422) over US-1 By-Pass

Fair

Chester County, Pennsylvania · No. Kennett Square 47G3 · Structure no. 000000000009915

Built
1965
60 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
136 ft
2 main spans
Daily traffic
2,739
2024 count
Owner
State
State Highway Agency

About this bridge

Walnut Road (T422) over US-1 By-Pass is a prestressed concrete stringer/multi-beam or girder carrying Walnut Road (T422) over US-1 By-Pass in Chester County, Pennsylvania. It was built in 1965, so it is 60 years old, older 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 2,739 vehicles a day, roughly 6% of them trucks, projected to reach 3,051 by 2032. The structure is 136 ft (41.5 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesWalnut Road (T422)
CrossesUS-1 By-Pass
LocationNo. Kennett Square 47G3
RouteState Highway 0
CountyChester County
StatePennsylvania
Coordinates39.85686, -75.70354
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMarch 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating69 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length136 ft (41.5 m)
Longest span67 ft (20.4 m)
Deck width33 ft (10.2 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,739 (2024)
Projected traffic3,051 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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$163,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Walnut Road (T422) over US-1 By-Pass built?

It was built in 1965, making it 60 years old in 2025.

What condition is Walnut Road (T422) over US-1 By-Pass 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 March 2024.

How much traffic does Walnut Road (T422) over US-1 By-Pass carry?

About 2,739 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Walnut Road (T422) over US-1 By-Pass?

The structure is 136 ft (41.5 m) long with a longest span of 67 ft (20.4 m) and a deck 33 ft wide.

Who owns Walnut Road (T422) over US-1 By-Pass?

It is owned by the State Highway Agency.