US Bridges

Chestnut ST over Chartiers Creek

Fair

Allegheny County, Pennsylvania · CC04 Chartiers Crk # 4 · Structure no. 000000000002564

Built
1983
42 years old, rebuilt 2015
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
184 ft
2 main spans
Daily traffic
5,924
2006 count
Owner
County
County Highway Agency

About this bridge

Chestnut ST over Chartiers Creek is a steel continuous stringer/multi-beam or girder carrying Chestnut ST over Chartiers Creek in Allegheny County, Pennsylvania. It was built in 1983 and reconstructed in 2015, so it is 42 years old, younger 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 5,924 vehicles a day, roughly 6% of them trucks, projected to reach 10,314 by 2028. The structure is 184 ft (56.1 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesChestnut ST
CrossesChartiers Creek
LocationCC04 Chartiers Crk # 4
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.41188, -80.08412
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating61 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length184 ft (56.1 m)
Longest span90 ft (27.4 m)
Deck width46 ft (13.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,924 (2006)
Projected traffic10,314 by 2028
Trucks6%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$448,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Chestnut ST over Chartiers Creek built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2015.

What condition is Chestnut ST over Chartiers Creek 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 March 2023.

How much traffic does Chestnut ST over Chartiers Creek carry?

About 5,924 vehicles per day (2006 count), of which roughly 6% are trucks.

How long is Chestnut ST over Chartiers Creek?

The structure is 184 ft (56.1 m) long with a longest span of 90 ft (27.4 m) and a deck 46 ft wide.

Who owns Chestnut ST over Chartiers Creek?

It is owned by the County Highway Agency.