US Bridges

T-565; Main St. over Unt to West Dry Run

Fair

Franklin County, Pennsylvania · 0.1 MI W of SR 75/ SR641 · Structure no. 000000000053547

Built
1924
101 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
2 main spans
Daily traffic
100
2016 count
Owner
County
County Highway Agency

About this bridge

T-565; Main St. over Unt to West Dry Run is a steel stringer/multi-beam or girder carrying T-565; Main St. over Unt to West Dry Run in Franklin County, Pennsylvania. It was built in 1924, so it is 101 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 110 by 2036. The structure is 52 ft (15.8 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesT-565; Main St.
CrossesUnt to West Dry Run
Location0.1 MI W of SR 75/ SR641
RouteCity Street 0
Coordinates40.14228, -77.77257
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating54 US tons
Inventory rating32 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.9 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2016)
Projected traffic110 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T-565; Main St. over Unt to West Dry Run built?

It was built in 1924, making it 101 years old in 2025.

What condition is T-565; Main St. over Unt to West Dry 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 October 2024.

How much traffic does T-565; Main St. over Unt to West Dry Run carry?

About 100 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is T-565; Main St. over Unt to West Dry Run?

The structure is 52 ft (15.8 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns T-565; Main St. over Unt to West Dry Run?

It is owned by the County Highway Agency.