US Bridges

T-620 Fallecker RD over Bonnie Brook

Fair

Butler County, Pennsylvania · 0.12 MI NW of T-601 · Structure no. 000000000008272

Built
1920
105 years old, rebuilt 2001
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
46 ft
1 main span
Daily traffic
100
2017 count
Owner
County
County Highway Agency

About this bridge

T-620 Fallecker RD over Bonnie Brook is a steel stringer/multi-beam or girder carrying T-620 Fallecker RD over Bonnie Brook in Butler County, Pennsylvania. It was built in 1920 and reconstructed in 2001, so it is 105 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 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 100 vehicles a day, roughly 9% of them trucks, projected to reach 125 by 2037. The structure is 46 ft (14 m) long and 18 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesT-620 Fallecker RD
CrossesBonnie Brook
Location0.12 MI NW of T-601
RouteCity Street 0
CountyButler County
StatePennsylvania
Coordinates40.89619, -79.79576
Functional classRural 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length46 ft (14 m)
Longest span44 ft (13.4 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2017)
Projected traffic125 by 2037
Trucks9%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$340,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-620 Fallecker RD over Bonnie Brook built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2001.

What condition is T-620 Fallecker RD over Bonnie Brook 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 2023.

How much traffic does T-620 Fallecker RD over Bonnie Brook carry?

About 100 vehicles per day (2017 count), of which roughly 9% are trucks.

How long is T-620 Fallecker RD over Bonnie Brook?

The structure is 46 ft (14 m) long with a longest span of 44 ft (13.4 m) and a deck 18 ft wide.

Who owns T-620 Fallecker RD over Bonnie Brook?

It is owned by the County Highway Agency.