US Bridges

Parks Run RD over Millers Run

Fair

Allegheny County, Pennsylvania · MS06 Millers Run No. 6 · Structure no. 000000000002242

Built
1890
135 years old, rebuilt 2011
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
53 ft
1 main span
Daily traffic
250
2011 count
Owner
County
County Highway Agency

About this bridge

Parks Run RD over Millers Run is a steel stringer/multi-beam or girder carrying Parks Run RD over Millers Run in Allegheny County, Pennsylvania. It was built in 1890 and reconstructed in 2011, so it is 135 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 6 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 250 vehicles a day, roughly 5% of them trucks, projected to reach 300 by 2033. The structure is 53 ft (16.2 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesParks Run RD
CrossesMillers Run
LocationMS06 Millers Run No. 6
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.33771, -80.17327
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: 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 rating96 US tons
Inventory rating57 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span53 ft (16.2 m)
Deck width31 ft (9.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2011)
Projected traffic300 by 2033
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$186,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Parks Run RD over Millers Run built?

It was built in 1890, making it 135 years old in 2025. It was reconstructed in 2011.

What condition is Parks Run RD over Millers Run 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 September 2023.

How much traffic does Parks Run RD over Millers Run carry?

About 250 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Parks Run RD over Millers Run?

The structure is 53 ft (16.2 m) long with a longest span of 53 ft (16.2 m) and a deck 31 ft wide.

Who owns Parks Run RD over Millers Run?

It is owned by the County Highway Agency.