US Bridges

SR 850- Pa 850 over Willow Run

Good

Juniata County, Pennsylvania · Mccullouchs Mills · Structure no. 000000000054972

Built
2017
8 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
87 ft
2 main spans
Daily traffic
236
2023 count
Owner
State
State Highway Agency

About this bridge

SR 850- Pa 850 over Willow Run is a prestressed concrete box beam or girders - multiple carrying SR 850- Pa 850 over Willow Run in Juniata County, Pennsylvania. It was built in 2017, so it is 8 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 236 vehicles a day, roughly 9% of them trucks, projected to reach 317 by 2043. The structure is 87 ft (26.5 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR 850- Pa 850
CrossesWillow Run
LocationMccullouchs Mills
RouteState Highway 850
CountyJuniata County
StatePennsylvania
Coordinates40.42362, -77.58693
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating50.4 US tons
Inventory rating38.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length87 ft (26.5 m)
Longest span42 ft (12.8 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic236 (2023)
Projected traffic317 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 850- Pa 850 over Willow Run built?

It was built in 2017, making it 8 years old in 2025.

What condition is SR 850- Pa 850 over Willow Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does SR 850- Pa 850 over Willow Run carry?

About 236 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 850- Pa 850 over Willow Run?

The structure is 87 ft (26.5 m) long with a longest span of 42 ft (12.8 m) and a deck 28 ft wide.

Who owns SR 850- Pa 850 over Willow Run?

It is owned by the State Highway Agency.