US Bridges

Maint/Access Road over Conemaugh River

PoorPosted for load

Indiana County, Pennsylvania · 0.35 Mi. Ds from Dam · Structure no. CEPLRPPA8110704

Built
1907
118 years old
Condition
Poor
inspected May 2024
Type
Arch - Deck
Masonry
Length
530 ft
6 main spans
Daily traffic
30
2024 count
Owner
Federal
Corps of Engineers (Civil)

About this bridge

Maint/Access Road over Conemaugh River is a masonry arch - deck carrying Maint/Access Road over Conemaugh River in Indiana County, Pennsylvania. It was built in 1907, so it is 118 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. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, projected to reach 40 by 2041. The structure is 530 ft (161.5 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesMaint/Access Road
CrossesConemaugh River
Location0.35 Mi. Ds from Dam
RouteFederal Lands Road 0
CountyIndiana County
StatePennsylvania
Coordinates40.46165, -79.36771
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
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans6
Design loadHS 20
Structure length530 ft (161.5 m)
Longest span80 ft (24.4 m)
Deck width34 ft (10.3 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deck33 ft (9.9 m)

Traffic and service

Average daily traffic30 (2024)
Projected traffic40 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCorps of Engineers (Civil)
Maintained byCorps of Engineers (Civil)
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Maint/Access Road over Conemaugh River built?

It was built in 1907, making it 118 years old in 2025.

What condition is Maint/Access Road over Conemaugh River 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 May 2024.

How much traffic does Maint/Access Road over Conemaugh River carry?

About 30 vehicles per day (2024 count).

How long is Maint/Access Road over Conemaugh River?

The structure is 530 ft (161.5 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.

Who owns Maint/Access Road over Conemaugh River?

It is owned by the Corps of Engineers (Civil).