US Bridges

SR3031 over Blacklegs Creek

Poor

Indiana County, Pennsylvania · Green Valley · Structure no. 000000000019358

Built
1939
86 years old
Condition
Poor
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
21 ft
1 main span
Daily traffic
313
2024 count
Owner
State
State Highway Agency

About this bridge

SR3031 over Blacklegs Creek is a steel stringer/multi-beam or girder carrying SR3031 over Blacklegs Creek in Indiana County, Pennsylvania. It was built in 1939, so it is 86 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 313 vehicles a day, roughly 3% of them trucks, projected to reach 613 by 2032. The structure is 21 ft (6.4 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR3031
CrossesBlacklegs Creek
LocationGreen Valley
RouteState Highway 0
CountyIndiana County
StatePennsylvania
Coordinates40.59865, -79.3105
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckOpen grating
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span20 ft (6.1 m)
Deck width25 ft (7.5 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic313 (2024)
Projected traffic613 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$144,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR3031 over Blacklegs Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is SR3031 over Blacklegs Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does SR3031 over Blacklegs Creek carry?

About 313 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is SR3031 over Blacklegs Creek?

The structure is 21 ft (6.4 m) long with a longest span of 20 ft (6.1 m) and a deck 25 ft wide.

Who owns SR3031 over Blacklegs Creek?

It is owned by the State Highway Agency.