US Bridges

SR 6-US 6 over Iron Hollow Run

Poor

McKean County, Pennsylvania · 3 MI SE Smethport · Structure no. 000000000025219

Built
1921
104 years old, rebuilt 1947
Condition
Poor
inspected July 2024
Type
Tee Beam
Concrete
Length
24 ft
1 main span
Daily traffic
2,049
2024 count
Owner
State
State Highway Agency

About this bridge

SR 6-US 6 over Iron Hollow Run is a concrete tee beam carrying SR 6-US 6 over Iron Hollow Run in McKean County, Pennsylvania. It was built in 1921 and reconstructed in 1947, so it is 104 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,049 vehicles a day, roughly 25% of them trucks, projected to reach 2,492 by 2044. The structure is 24 ft (7.3 m) long and 41 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesSR 6-US 6
CrossesIron Hollow Run
Location3 MI SE Smethport
RouteU.S. Route 6
CountyMcKean County
StatePennsylvania
Coordinates41.78092, -78.50115
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,049 (2024)
Projected traffic2,492 by 2044
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$381,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 6-US 6 over Iron Hollow Run built?

It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1947.

What condition is SR 6-US 6 over Iron Hollow Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does SR 6-US 6 over Iron Hollow Run carry?

About 2,049 vehicles per day (2024 count), of which roughly 25% are trucks.

How long is SR 6-US 6 over Iron Hollow Run?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 41 ft wide.

Who owns SR 6-US 6 over Iron Hollow Run?

It is owned by the State Highway Agency.