US Bridges

SR 4009;LOUDON Rd. over Wilson Run

Fair

Franklin County, Pennsylvania · 3 Mi. N.E. of St. Thomas · Structure no. 000000000040421

Built
1999
26 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
1,001
2024 count
Owner
State
State Highway Agency

About this bridge

SR 4009;LOUDON Rd. over Wilson Run is a prestressed concrete box beam or girders - multiple carrying SR 4009;LOUDON Rd. over Wilson Run in Franklin County, Pennsylvania. It was built in 1999, so it is 26 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 6 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 1,001 vehicles a day, roughly 9% of them trucks, projected to reach 963 by 2032. The structure is 54 ft (16.5 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSR 4009;LOUDON Rd.
CrossesWilson Run
Location3 Mi. N.E. of St. Thomas
RouteState Highway 0
CountyFranklin County
StatePennsylvania
Coordinates39.95303, -77.76314
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: 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 rating98 US tons
Inventory rating49.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length54 ft (16.5 m)
Longest span52 ft (15.8 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,001 (2024)
Projected traffic963 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 4009;LOUDON Rd. over Wilson Run built?

It was built in 1999, making it 26 years old in 2025.

What condition is SR 4009;LOUDON Rd. over Wilson 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 2024.

How much traffic does SR 4009;LOUDON Rd. over Wilson Run carry?

About 1,001 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is SR 4009;LOUDON Rd. over Wilson Run?

The structure is 54 ft (16.5 m) long with a longest span of 52 ft (15.8 m) and a deck 31 ft wide.

Who owns SR 4009;LOUDON Rd. over Wilson Run?

It is owned by the State Highway Agency.