US Bridges

Presto Sygan Road over Branch Millers Run

Poor

Allegheny County, Pennsylvania · 300 North of SR50 · Structure no. 000000000001745

Built
1942
83 years old
Condition
Poor
inspected May 2024
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
3,268
2024 count
Owner
State
State Highway Agency

About this bridge

Presto Sygan Road over Branch Millers Run is a concrete culvert carrying Presto Sygan Road over Branch Millers Run in Allegheny County, Pennsylvania. It was built in 1942, so it is 83 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 3 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 3,268 vehicles a day, roughly 10% of them trucks, projected to reach 5,879 by 2038. The structure is 23 ft (7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPresto Sygan Road
CrossesBranch Millers Run
Location300 North of SR50
RouteState Highway 0
CountyAllegheny County
StatePennsylvania
Coordinates40.35628, -80.13209
Functional classUrban 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,268 (2024)
Projected traffic5,879 by 2038
Trucks10%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$186,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Presto Sygan Road over Branch Millers Run built?

It was built in 1942, making it 83 years old in 2025.

What condition is Presto Sygan Road over Branch Millers 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 May 2024.

How much traffic does Presto Sygan Road over Branch Millers Run carry?

About 3,268 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Presto Sygan Road over Branch Millers Run?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m).

Who owns Presto Sygan Road over Branch Millers Run?

It is owned by the State Highway Agency.