US Bridges

T-780 Jackson Twp over Br of Alder Run

Fair

Tioga County, Pennsylvania · 2.5 MI NE Jackson Summit · Structure no. 000000000033274

Built
1973
52 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
75
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-780 Jackson Twp over Br of Alder Run is a steel stringer/multi-beam or girder carrying T-780 Jackson Twp over Br of Alder Run in Tioga County, Pennsylvania. It was built in 1973, so it is 52 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 75 vehicles a day, projected to reach 116 by 2045. The structure is 29 ft (8.8 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesT-780 Jackson Twp
CrossesBr of Alder Run
Location2.5 MI NE Jackson Summit
RouteCity Street 0
CountyTioga County
StatePennsylvania
Coordinates41.9791, -76.99977
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic116 by 2045
Trucks0%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$81,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-780 Jackson Twp over Br of Alder Run built?

It was built in 1973, making it 52 years old in 2025.

What condition is T-780 Jackson Twp over Br of Alder 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 June 2023.

How much traffic does T-780 Jackson Twp over Br of Alder Run carry?

About 75 vehicles per day (2023 count).

How long is T-780 Jackson Twp over Br of Alder Run?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 27 ft wide.

Who owns T-780 Jackson Twp over Br of Alder Run?

It is owned by the Town or Township Highway Agency.