US Bridges

T-343 over Long Hollow Run

Fair

Mifflin County, Pennsylvania · 100FT West of SR 22 · Structure no. 000000000026651

Built
1926
99 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
28 ft
1 main span
Daily traffic
150
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-343 over Long Hollow Run is a concrete tee beam carrying T-343 over Long Hollow Run in Mifflin County, Pennsylvania. It was built in 1926, so it is 99 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 400 by 2043. The structure is 28 ft (8.5 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesT-343
CrossesLong Hollow Run
Location100FT West of SR 22
RouteCity Street 0
CountyMifflin County
StatePennsylvania
Coordinates40.40246, -77.86642
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 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
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width26 ft (7.9 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic400 by 2043
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

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$38,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-343 over Long Hollow Run built?

It was built in 1926, making it 99 years old in 2025.

What condition is T-343 over Long Hollow 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-343 over Long Hollow Run carry?

About 150 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is T-343 over Long Hollow Run?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 26 ft wide.

Who owns T-343 over Long Hollow Run?

It is owned by the Town or Township Highway Agency.