US Bridges

T-748 Creek Road over Mahoning Creek

Fair

Armstrong County, Pennsylvania · 2.6 Miles N or SR-1018 · Structure no. 000000000003419

Built
1994
31 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
170 ft
2 main spans
Daily traffic
150
2021 count
Owner
County
County Highway Agency

About this bridge

T-748 Creek Road over Mahoning Creek is a prestressed concrete continuous box beam or girders - multiple carrying T-748 Creek Road over Mahoning Creek in Armstrong County, Pennsylvania. It was built in 1994, so it is 31 years old, younger 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 150 vehicles a day, roughly 9% of them trucks, projected to reach 210 by 2041. The structure is 170 ft (51.8 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesT-748 Creek Road
CrossesMahoning Creek
Location2.6 Miles N or SR-1018
RouteCity Street 7227
CountyArmstrong County
StatePennsylvania
Coordinates40.92661, -79.29086
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110.1 US tons
Inventory rating73 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length170 ft (51.8 m)
Longest span83 ft (25.3 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2021)
Projected traffic210 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T-748 Creek Road over Mahoning Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is T-748 Creek Road over Mahoning Creek 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 June 2023.

How much traffic does T-748 Creek Road over Mahoning Creek carry?

About 150 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is T-748 Creek Road over Mahoning Creek?

The structure is 170 ft (51.8 m) long with a longest span of 83 ft (25.3 m) and a deck 28 ft wide.

Who owns T-748 Creek Road over Mahoning Creek?

It is owned by the County Highway Agency.