US Bridges

SR 147 Nbl over Over Muddy Run

Good

Northumberland County, Pennsylvania · 1.75 MI North of Milton · Structure no. 000000000029060

Built
1969
56 years old, rebuilt 2003
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
8,515
2023 count
Owner
State
State Highway Agency

About this bridge

SR 147 Nbl over Over Muddy Run is a prestressed concrete box beam or girders - multiple carrying SR 147 Nbl over Over Muddy Run in Northumberland County, Pennsylvania. It was built in 1969 and reconstructed in 2003, so it is 56 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,515 vehicles a day, roughly 24% of them trucks, projected to reach 8,255 by 2032. The structure is 33 ft (10.1 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR 147 Nbl
CrossesOver Muddy Run
Location1.75 MI North of Milton
RouteState Highway 147
Coordinates41.03862, -76.84022
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating47 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span32 ft (9.8 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,515 (2023)
Projected traffic8,255 by 2032
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 147 Nbl over Over Muddy Run built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2003.

What condition is SR 147 Nbl over Over Muddy 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 December 2023.

How much traffic does SR 147 Nbl over Over Muddy Run carry?

About 8,515 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is SR 147 Nbl over Over Muddy Run?

The structure is 33 ft (10.1 m) long with a longest span of 32 ft (9.8 m) and a deck 44 ft wide.

Who owns SR 147 Nbl over Over Muddy Run?

It is owned by the State Highway Agency.