US Bridges

SR 147 over Over Twp. 589

Fair

Northumberland County, Pennsylvania · 0.5 MI North of Milton · Structure no. 000000000029059

Built
1971
54 years old, rebuilt 2003
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
9,520
2023 count
Owner
State
State Highway Agency

About this bridge

SR 147 over Over Twp. 589 is a prestressed concrete box beam or girders - multiple carrying SR 147 over Over Twp. 589 in Northumberland County, Pennsylvania. It was built in 1971 and reconstructed in 2003, so it is 54 years old, younger 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 6 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 9,520 vehicles a day, roughly 22% of them trucks, projected to reach 8,555 by 2032. The structure is 63 ft (19.2 m) long and 48 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSR 147
CrossesOver Twp. 589
Location0.5 MI North of Milton
RouteState Highway 147
CountyNorthumberland County
StatePennsylvania
Coordinates41.03137, -76.83781
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating39 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span62 ft (18.9 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,520 (2023)
Projected traffic8,555 by 2032
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 147 over Over Twp. 589 built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2003.

What condition is SR 147 over Over Twp. 589 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 2023.

How much traffic does SR 147 over Over Twp. 589 carry?

About 9,520 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is SR 147 over Over Twp. 589?

The structure is 63 ft (19.2 m) long with a longest span of 62 ft (18.9 m) and a deck 48 ft wide.

Who owns SR 147 over Over Twp. 589?

It is owned by the State Highway Agency.