US Bridges

Ansonia Pl over Saw Mill Run

PoorClosed to traffic

Allegheny County, Pennsylvania · 006 Ansonia Pl Bridge · Structure no. 000000000002395

Built
1925
100 years old, rebuilt 1998
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
—
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ansonia Pl over Saw Mill Run is a steel stringer/multi-beam or girder carrying Ansonia Pl over Saw Mill Run in Allegheny County, Pennsylvania. It was built in 1925 and reconstructed in 1998, so it is 100 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. Its operating status is: closed to all traffic.

No traffic count is recorded. The structure is 36 ft (11 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesAnsonia Pl
CrossesSaw Mill Run
Location006 Ansonia Pl Bridge
RouteCity Street 0
Coordinates40.3945, -79.9976
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating13 US tons
Inventory rating7.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span33 ft (10.1 m)
Deck width31 ft (9.3 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks5%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$90,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ansonia Pl over Saw Mill Run built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1998.

What condition is Ansonia Pl over Saw Mill 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 June 2024.

How much traffic does Ansonia Pl over Saw Mill Run carry?

No traffic count is recorded for this structure.

How long is Ansonia Pl over Saw Mill Run?

The structure is 36 ft (11 m) long with a longest span of 33 ft (10.1 m) and a deck 31 ft wide.

Who owns Ansonia Pl over Saw Mill Run?

It is owned by the City or Municipal Highway Agency.