US Bridges

SR2012 over Mardis Run

Poor

Indiana County, Pennsylvania · Dilltown NO.3 · Structure no. 000000000019289

Built
1919
106 years old
Condition
Poor
inspected July 2024
Type
Arch - Deck
Concrete
Length
30 ft
1 main span
Daily traffic
170
2024 count
Owner
State
State Highway Agency

About this bridge

SR2012 over Mardis Run is a concrete arch - deck carrying SR2012 over Mardis Run in Indiana County, Pennsylvania. It was built in 1919, so it is 106 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 170 vehicles a day, roughly 1% of them trucks, projected to reach 197 by 2032. The structure is 30 ft (9.1 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR2012
CrossesMardis Run
LocationDilltown NO.3
RouteState Highway 0
CountyIndiana County
StatePennsylvania
Coordinates40.46881, -78.99872
Functional classRural Local

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
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2024)
Projected traffic197 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$422,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR2012 over Mardis Run built?

It was built in 1919, making it 106 years old in 2025.

What condition is SR2012 over Mardis Run 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 July 2024.

How much traffic does SR2012 over Mardis Run carry?

About 170 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR2012 over Mardis Run?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.

Who owns SR2012 over Mardis Run?

It is owned by the State Highway Agency.