US Bridges

Pa 147; SR 0147 over Wiconisco Creek

Fair

Dauphin County, Pennsylvania · South Millersburg · Structure no. 000000000014299

Built
1954
71 years old, rebuilt 2010
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
172 ft
3 main spans
Daily traffic
6,189
2023 count
Owner
State
State Highway Agency

About this bridge

Pa 147; SR 0147 over Wiconisco Creek is a steel stringer/multi-beam or girder carrying Pa 147; SR 0147 over Wiconisco Creek in Dauphin County, Pennsylvania. It was built in 1954 and reconstructed in 2010, so it is 71 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 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 6,189 vehicles a day, roughly 7% of them trucks, projected to reach 8,460 by 2032. The structure is 172 ft (52.4 m) long and 50 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPa 147; SR 0147
CrossesWiconisco Creek
LocationSouth Millersburg
RouteState Highway 147
CountyDauphin County
StatePennsylvania
Coordinates40.5372, -76.96056
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2022
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span61 ft (18.6 m)
Deck width50 ft (15.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,189 (2023)
Projected traffic8,460 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$1.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa 147; SR 0147 over Wiconisco Creek built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2010.

What condition is Pa 147; SR 0147 over Wiconisco 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 November 2022.

How much traffic does Pa 147; SR 0147 over Wiconisco Creek carry?

About 6,189 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Pa 147; SR 0147 over Wiconisco Creek?

The structure is 172 ft (52.4 m) long with a longest span of 61 ft (18.6 m) and a deck 50 ft wide.

Who owns Pa 147; SR 0147 over Wiconisco Creek?

It is owned by the State Highway Agency.