US Bridges

US 1 By-Pass over W.Branch Red Clay Creek

Fair

Chester County, Pennsylvania · Near MI Mark 20.4 47C4 · Structure no. 000000000009911

Built
1965
60 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
35 ft
1 main span
Daily traffic
32,115
2024 count
Owner
State
State Highway Agency

About this bridge

US 1 By-Pass over W.Branch Red Clay Creek is a concrete culvert carrying US 1 By-Pass over W.Branch Red Clay Creek 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 32,115 vehicles a day, roughly 4% of them trucks, projected to reach 36,255 by 2032. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesUS 1 By-Pass
CrossesW.Branch Red Clay Creek
LocationNear MI Mark 20.4 47C4
RouteU.S. Route 1
CountyChester County
StatePennsylvania
Coordinates39.85359, -75.73014
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating47 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span35 ft (10.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,115 (2024)
Projected traffic36,255 by 2032
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 1 By-Pass over W.Branch Red Clay Creek built?

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

What condition is US 1 By-Pass over W.Branch Red Clay Creek 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 2023.

How much traffic does US 1 By-Pass over W.Branch Red Clay Creek carry?

About 32,115 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is US 1 By-Pass over W.Branch Red Clay Creek?

The structure is 35 ft (10.7 m) long with a longest span of 35 ft (10.7 m).

Who owns US 1 By-Pass over W.Branch Red Clay Creek?

It is owned by the State Highway Agency.