US Bridges

SR2008 over Mill Run

Poor

Armstrong County, Pennsylvania · Mcnees · Structure no. 000000000003183

Built
1941
84 years old
Condition
Poor
inspected August 2023
Type
Tee Beam
Concrete
Length
37 ft
1 main span
Daily traffic
189
2024 count
Owner
State
State Highway Agency

About this bridge

SR2008 over Mill Run is a concrete tee beam carrying SR2008 over Mill Run in Armstrong County, Pennsylvania. It was built in 1941, so it is 84 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 189 vehicles a day, roughly 15% of them trucks, projected to reach 294 by 2032. The structure is 37 ft (11.3 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSR2008
CrossesMill Run
LocationMcnees
RouteState Highway 0
CountyArmstrong County
StatePennsylvania
Coordinates40.79747, -79.44653
Functional classRural Local

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.
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length37 ft (11.3 m)
Longest span34 ft (10.4 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic189 (2024)
Projected traffic294 by 2032
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$110,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR2008 over Mill Run built?

It was built in 1941, making it 84 years old in 2025.

What condition is SR2008 over Mill 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 August 2023.

How much traffic does SR2008 over Mill Run carry?

About 189 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is SR2008 over Mill Run?

The structure is 37 ft (11.3 m) long with a longest span of 34 ft (10.4 m) and a deck 28 ft wide.

Who owns SR2008 over Mill Run?

It is owned by the State Highway Agency.