US Bridges

Arch ST Shamokin over Carbon Run

Fair

Northumberland County, Pennsylvania · Shamokin City · Structure no. 000000000029396

Built
1994
31 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
3,100
2011 count
Owner
County
County Highway Agency

About this bridge

Arch ST Shamokin over Carbon Run is a concrete culvert carrying Arch ST Shamokin over Carbon Run in Northumberland County, Pennsylvania. It was built in 1994, so it is 31 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 3,100 vehicles a day, roughly 3% of them trucks, projected to reach 4,793 by 2033. The structure is 24 ft (7.3 m) long and 47 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesArch ST Shamokin
CrossesCarbon Run
LocationShamokin City
RouteCity Street 0
CountyNorthumberland County
StatePennsylvania
Coordinates40.78859, -76.56303
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width47 ft (14.2 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2011)
Projected traffic4,793 by 2033
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Arch ST Shamokin over Carbon Run built?

It was built in 1994, making it 31 years old in 2025.

What condition is Arch ST Shamokin over Carbon Run 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 May 2023.

How much traffic does Arch ST Shamokin over Carbon Run carry?

About 3,100 vehicles per day (2011 count), of which roughly 3% are trucks.

How long is Arch ST Shamokin over Carbon Run?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 47 ft wide.

Who owns Arch ST Shamokin over Carbon Run?

It is owned by the County Highway Agency.