US Bridges

SR 449-PA 449 over Ninemile Run

Poor

Potter County, Pennsylvania · Walton · Structure no. 000000000030232

Built
1926
99 years old
Condition
Poor
inspected September 2024
Type
Tee Beam
Concrete
Length
32 ft
1 main span
Daily traffic
580
2024 count
Owner
State
State Highway Agency

About this bridge

SR 449-PA 449 over Ninemile Run is a concrete tee beam carrying SR 449-PA 449 over Ninemile Run in Potter 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 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 580 vehicles a day, roughly 21% of them trucks, projected to reach 679 by 2044. The structure is 32 ft (9.8 m) long and 26 ft wide. If it were closed, the detour would be 23 mi (37 km).

Location

Open in Google Maps
CarriesSR 449-PA 449
CrossesNinemile Run
LocationWalton
RouteState Highway 449
CountyPotter County
StatePennsylvania
Coordinates41.79157, -77.76386
Functional classRural Minor Arterial

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 inspectionSeptember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating33 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic580 (2024)
Projected traffic679 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$427,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 449-PA 449 over Ninemile Run built?

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

What condition is SR 449-PA 449 over Ninemile 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 September 2024.

How much traffic does SR 449-PA 449 over Ninemile Run carry?

About 580 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is SR 449-PA 449 over Ninemile Run?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.

Who owns SR 449-PA 449 over Ninemile Run?

It is owned by the State Highway Agency.