US Bridges

SR 20 Buffalo Road over Over Six Mile Creek

Fair

Erie County, Pennsylvania · Harbor Creek Township · Structure no. 000000000015917

Built
1954
71 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
13,267
2024 count
Owner
State
State Highway Agency

About this bridge

SR 20 Buffalo Road over Over Six Mile Creek is a steel stringer/multi-beam or girder carrying SR 20 Buffalo Road over Over Six Mile Creek in Erie County, Pennsylvania. It was built in 1954, 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 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 13,267 vehicles a day, roughly 3% of them trucks, projected to reach 10,595 by 2032. The structure is 61 ft (18.6 m) long and 65 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 20 Buffalo Road
CrossesOver Six Mile Creek
LocationHarbor Creek Township
RouteU.S. Route 20
CountyErie County
StatePennsylvania
Coordinates42.15765, -79.97778
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span58 ft (17.7 m)
Deck width65 ft (19.8 m)
Roadway width63 ft (19.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,267 (2024)
Projected traffic10,595 by 2032
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$107,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 20 Buffalo Road over Over Six Mile Creek built?

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

What condition is SR 20 Buffalo Road over Over Six Mile 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 October 2023.

How much traffic does SR 20 Buffalo Road over Over Six Mile Creek carry?

About 13,267 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is SR 20 Buffalo Road over Over Six Mile Creek?

The structure is 61 ft (18.6 m) long with a longest span of 58 ft (17.7 m) and a deck 65 ft wide.

Who owns SR 20 Buffalo Road over Over Six Mile Creek?

It is owned by the State Highway Agency.