US Bridges

Thompson Road over Scarlet Run

Fair

Chester County, Pennsylvania · S of Cypress ST 3801B7 · Structure no. 000000000054251

Built
1980
45 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
500
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Thompson Road over Scarlet Run is a concrete culvert carrying Thompson Road over Scarlet Run in Chester County, Pennsylvania. It was built in 1980, so it is 45 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 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 650 by 2037. The structure is 21 ft (6.4 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesThompson Road
CrossesScarlet Run
LocationS of Cypress ST 3801B7
CountyChester County
StatePennsylvania
Coordinates39.8368, -75.73832
Functional classRural 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating55 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width22 ft (6.7 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2017)
Projected traffic650 by 2037
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Thompson Road over Scarlet Run built?

It was built in 1980, making it 45 years old in 2025.

What condition is Thompson Road over Scarlet Run 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 2023.

How much traffic does Thompson Road over Scarlet Run carry?

About 500 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Thompson Road over Scarlet Run?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 22 ft wide.

Who owns Thompson Road over Scarlet Run?

It is owned by the Town or Township Highway Agency.