US Bridges

SR 642 over Over Chillisquaque Cr.

Good

Northumberland County, Pennsylvania · 0.5 MI E of Pottsgrove · Structure no. 000000000029119

Built
1958
67 years old, rebuilt 2012
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
212 ft
3 main spans
Daily traffic
1,899
2023 count
Owner
State
State Highway Agency

About this bridge

SR 642 over Over Chillisquaque Cr. is a steel continuous stringer/multi-beam or girder carrying SR 642 over Over Chillisquaque Cr. in Northumberland County, Pennsylvania. It was built in 1958 and reconstructed in 2012, so it is 67 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 1,899 vehicles a day, roughly 8% of them trucks, projected to reach 2,612 by 2032. The structure is 212 ft (64.6 m) long and 46 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesSR 642
CrossesOver Chillisquaque Cr.
Location0.5 MI E of Pottsgrove
RouteState Highway 642
CountyNorthumberland County
StatePennsylvania
Coordinates40.99312, -76.77922
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length212 ft (64.6 m)
Longest span80 ft (24.4 m)
Deck width46 ft (13.9 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,899 (2023)
Projected traffic2,612 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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$437,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 642 over Over Chillisquaque Cr. built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2012.

What condition is SR 642 over Over Chillisquaque Cr. 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 June 2023.

How much traffic does SR 642 over Over Chillisquaque Cr. carry?

About 1,899 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 642 over Over Chillisquaque Cr.?

The structure is 212 ft (64.6 m) long with a longest span of 80 ft (24.4 m) and a deck 46 ft wide.

Who owns SR 642 over Over Chillisquaque Cr.?

It is owned by the State Highway Agency.