US Bridges

Pa 850; SR 0850 over Baker Creek

Fair

Perry County, Pennsylvania · Alinda · Structure no. 000000000029568

Built
1929
96 years old
Condition
Fair
inspected December 2022
Type
Tee Beam
Concrete
Length
25 ft
1 main span
Daily traffic
3,246
2023 count
Owner
State
State Highway Agency

About this bridge

Pa 850; SR 0850 over Baker Creek is a concrete tee beam carrying Pa 850; SR 0850 over Baker Creek in Perry County, Pennsylvania. It was built in 1929, so it is 96 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 3,246 vehicles a day, roughly 11% of them trucks, projected to reach 5,359 by 2032. The structure is 25 ft (7.6 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesPa 850; SR 0850
CrossesBaker Creek
LocationAlinda
RouteState Highway 850
CountyPerry County
StatePennsylvania
Coordinates40.34613, -77.28577
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length25 ft (7.6 m)
Longest span22 ft (6.7 m)
Deck width27 ft (8.1 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,246 (2023)
Projected traffic5,359 by 2032
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$38,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa 850; SR 0850 over Baker Creek built?

It was built in 1929, making it 96 years old in 2025.

What condition is Pa 850; SR 0850 over Baker Creek 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 December 2022.

How much traffic does Pa 850; SR 0850 over Baker Creek carry?

About 3,246 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Pa 850; SR 0850 over Baker Creek?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 27 ft wide.

Who owns Pa 850; SR 0850 over Baker Creek?

It is owned by the State Highway Agency.