US Bridges

Carothers ST over Chartiers Creek

Fair

Allegheny County, Pennsylvania · CC06 Chartiers Crk # 6 · Structure no. 000000000002565

Built
1927
98 years old, rebuilt 2014
Condition
Fair
inspected November 2024
Type
Truss - Thru
Steel
Length
146 ft
1 main span
Daily traffic
8,513
2006 count
Owner
County
County Highway Agency

About this bridge

Carothers ST over Chartiers Creek is a steel truss - thru carrying Carothers ST over Chartiers Creek in Allegheny County, Pennsylvania. It was built in 1927 and reconstructed in 2014, so it is 98 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 5 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 8,513 vehicles a day, roughly 4% of them trucks, projected to reach 14,821 by 2026. The structure is 146 ft (44.5 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCarothers ST
CrossesChartiers Creek
LocationCC06 Chartiers Crk # 6
RouteCity Street 0
CountyAllegheny County
StatePennsylvania
Coordinates40.40224, -80.08864
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span140 ft (42.7 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,513 (2006)
Projected traffic14,821 by 2026
Trucks4%
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 statusEligible 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 Carothers ST over Chartiers Creek built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 2014.

What condition is Carothers 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 November 2024.

How much traffic does Carothers ST over Chartiers Creek carry?

About 8,513 vehicles per day (2006 count), of which roughly 4% are trucks.

How long is Carothers ST over Chartiers Creek?

The structure is 146 ft (44.5 m) long with a longest span of 140 ft (42.7 m) and a deck 32 ft wide.

Who owns Carothers ST over Chartiers Creek?

It is owned by the County Highway Agency.