US Bridges

SR0008 over Muddy Creek

Poor

Butler County, Pennsylvania · North of Unionville · Structure no. 000000000007787

Built
1942
83 years old
Condition
Poor
inspected September 2023
Type
Tee Beam
Concrete
Length
75 ft
2 main spans
Daily traffic
10,376
2024 count
Owner
State
State Highway Agency

About this bridge

SR0008 over Muddy Creek is a concrete tee beam carrying SR0008 over Muddy Creek in Butler County, Pennsylvania. It was built in 1942, so it is 83 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 10,376 vehicles a day, roughly 8% of them trucks, projected to reach 14,047 by 2032. The structure is 75 ft (22.9 m) long and 31 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesSR0008
CrossesMuddy Creek
LocationNorth of Unionville
RouteState Highway 8
Coordinates40.96938, -79.97034
Functional classRural Principal Arterial - Other

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span34 ft (10.4 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,376 (2024)
Projected traffic14,047 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemYes

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$183,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR0008 over Muddy Creek built?

It was built in 1942, making it 83 years old in 2025.

What condition is SR0008 over Muddy Creek 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 September 2023.

How much traffic does SR0008 over Muddy Creek carry?

About 10,376 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is SR0008 over Muddy Creek?

The structure is 75 ft (22.9 m) long with a longest span of 34 ft (10.4 m) and a deck 31 ft wide.

Who owns SR0008 over Muddy Creek?

It is owned by the State Highway Agency.