US Bridges

SR 477-PA 477 over SR 220-US 220

Fair

Clinton County, Pennsylvania · 1 Mile South Mill Hall · Structure no. 000000000012237

Built
1976
49 years old, rebuilt 2009
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
299 ft
2 main spans
Daily traffic
2,519
2023 count
Owner
State
State Highway Agency

About this bridge

SR 477-PA 477 over SR 220-US 220 is a steel continuous stringer/multi-beam or girder carrying SR 477-PA 477 over SR 220-US 220 in Clinton County, Pennsylvania. It was built in 1976 and reconstructed in 2009, so it is 49 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 5 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 2,519 vehicles a day, roughly 8% of them trucks, projected to reach 2,002 by 2044. The structure is 299 ft (91.1 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 477-PA 477
CrossesSR 220-US 220
Location1 Mile South Mill Hall
RouteState Highway 477
CountyClinton County
StatePennsylvania
Coordinates41.08693, -77.47594
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length299 ft (91.1 m)
Longest span106 ft (32.3 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,519 (2023)
Projected traffic2,002 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 477-PA 477 over SR 220-US 220 built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2009.

What condition is SR 477-PA 477 over SR 220-US 220 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 October 2024.

How much traffic does SR 477-PA 477 over SR 220-US 220 carry?

About 2,519 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 477-PA 477 over SR 220-US 220?

The structure is 299 ft (91.1 m) long with a longest span of 106 ft (32.3 m) and a deck 48 ft wide.

Who owns SR 477-PA 477 over SR 220-US 220?

It is owned by the State Highway Agency.