US Bridges

Mercer Street over Connoquenessing CR

Fair

Butler County, Pennsylvania · 100 Ft S Evergreen Mill · Structure no. 000000000040965

Built
2000
25 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
124 ft
1 main span
Daily traffic
1,200
2015 count
Owner
County
County Highway Agency

About this bridge

Mercer Street over Connoquenessing CR is a steel stringer/multi-beam or girder carrying Mercer Street over Connoquenessing CR in Butler County, Pennsylvania. It was built in 2000, so it is 25 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 1,200 vehicles a day, roughly 9% of them trucks, projected to reach 920 by 2035. The structure is 124 ft (37.8 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesMercer Street
CrossesConnoquenessing CR
Location100 Ft S Evergreen Mill
RouteCity Street 0
CountyButler County
StatePennsylvania
Coordinates40.80435, -80.12389
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating88 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length124 ft (37.8 m)
Longest span118 ft (36 m)
Deck width40 ft (12.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2015)
Projected traffic920 by 2035
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 Mercer Street over Connoquenessing CR built?

It was built in 2000, making it 25 years old in 2025.

What condition is Mercer Street over Connoquenessing CR 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 July 2023.

How much traffic does Mercer Street over Connoquenessing CR carry?

About 1,200 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is Mercer Street over Connoquenessing CR?

The structure is 124 ft (37.8 m) long with a longest span of 118 ft (36 m) and a deck 40 ft wide.

Who owns Mercer Street over Connoquenessing CR?

It is owned by the County Highway Agency.