US Bridges

SR 120-PA 120 over Elk Creek

Fair

Elk County, Pennsylvania · City of ST Marys · Structure no. 000000000015530

Built
1935
90 years old
Condition
Fair
inspected March 2024
Type
Culvert
Masonry
Length
21 ft
1 main span
Daily traffic
8,644
2024 count
Owner
State
State Highway Agency

About this bridge

SR 120-PA 120 over Elk Creek is a masonry culvert carrying SR 120-PA 120 over Elk Creek in Elk County, Pennsylvania. It was built in 1935, so it is 90 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 8,644 vehicles a day, roughly 9% of them trucks, projected to reach 13,568 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 120-PA 120
CrossesElk Creek
LocationCity of ST Marys
RouteState Highway 120
CountyElk County
StatePennsylvania
Coordinates41.42782, -78.56022
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialMasonry
DeckNot applicable
Main spans1
Design loadH 20
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,644 (2024)
Projected traffic13,568 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$327,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 120-PA 120 over Elk Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is SR 120-PA 120 over Elk 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 March 2024.

How much traffic does SR 120-PA 120 over Elk Creek carry?

About 8,644 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is SR 120-PA 120 over Elk Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m).

Who owns SR 120-PA 120 over Elk Creek?

It is owned by the State Highway Agency.