US Bridges

Morgan Hill RD over Millers Run

Fair

Allegheny County, Pennsylvania · MS05 Millers Run No. 5 · Structure no. 000000000002241

Built
1890
135 years old, rebuilt 1996
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
57 ft
1 main span
Daily traffic
1,300
2006 count
Owner
County
County Highway Agency

About this bridge

Morgan Hill RD over Millers Run is a steel stringer/multi-beam or girder carrying Morgan Hill RD over Millers Run in Allegheny County, Pennsylvania. It was built in 1890 and reconstructed in 1996, 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 1,300 vehicles a day, roughly 3% of them trucks, projected to reach 1,500 by 2026. The structure is 57 ft (17.4 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMorgan Hill RD
CrossesMillers Run
LocationMS05 Millers Run No. 5
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.35244, -80.14918
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length57 ft (17.4 m)
Longest span53 ft (16.2 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2006)
Projected traffic1,500 by 2026
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Morgan Hill RD over Millers Run built?

It was built in 1890, making it 135 years old in 2025. It was reconstructed in 1996.

What condition is Morgan Hill 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 2024.

How much traffic does Morgan Hill RD over Millers Run carry?

About 1,300 vehicles per day (2006 count), of which roughly 3% are trucks.

How long is Morgan Hill RD over Millers Run?

The structure is 57 ft (17.4 m) long with a longest span of 53 ft (16.2 m) and a deck 32 ft wide.

Who owns Morgan Hill RD over Millers Run?

It is owned by the County Highway Agency.