US Bridges

SR4010 over Mcdonald Run

Poor

Butler County, Pennsylvania · Branchton · Structure no. 000000000008131

Built
1939
86 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
21 ft
1 main span
Daily traffic
1,194
2024 count
Owner
State
State Highway Agency

About this bridge

SR4010 over Mcdonald Run is a steel stringer/multi-beam or girder carrying SR4010 over Mcdonald Run in Butler County, Pennsylvania. It was built in 1939, so it is 86 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 4 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.

It carries about 1,194 vehicles a day, roughly 5% of them trucks, projected to reach 2,148 by 2032. The structure is 21 ft (6.4 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR4010
CrossesMcdonald Run
LocationBranchton
RouteState Highway 0
Coordinates41.07233, -79.98704
Functional classRural Minor Collector

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating30 US tons

Structure

MaterialSteel
DeckClosed grating
Main spans1
Design loadH 20
Structure length21 ft (6.4 m)
Longest span18 ft (5.5 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,194 (2024)
Projected traffic2,148 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$188,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR4010 over Mcdonald Run built?

It was built in 1939, making it 86 years old in 2025.

What condition is SR4010 over Mcdonald 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 July 2023.

How much traffic does SR4010 over Mcdonald Run carry?

About 1,194 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is SR4010 over Mcdonald Run?

The structure is 21 ft (6.4 m) long with a longest span of 18 ft (5.5 m) and a deck 24 ft wide.

Who owns SR4010 over Mcdonald Run?

It is owned by the State Highway Agency.