US Bridges

T405 Hoods Mill R over Fourmile Run

Fair

Westmoreland County, Pennsylvania · Btw SR 130 & T499 · Structure no. 000000000036881

Built
1972
53 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
100
2015 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T405 Hoods Mill R over Fourmile Run is a steel stringer/multi-beam or girder carrying T405 Hoods Mill R over Fourmile Run in Westmoreland County, Pennsylvania. It was built in 1972, so it is 53 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 125 by 2035. The structure is 75 ft (22.9 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesT405 Hoods Mill R
CrossesFourmile Run
LocationBtw SR 130 & T499
RouteCity Street 0T405
CountyWestmoreland County
StatePennsylvania
Coordinates40.18729, -79.35352
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating102 US tons
Inventory rating61 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span70 ft (21.3 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic125 by 2035
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$45,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T405 Hoods Mill R over Fourmile Run built?

It was built in 1972, making it 53 years old in 2025.

What condition is T405 Hoods Mill R over Fourmile Run 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 November 2023.

How much traffic does T405 Hoods Mill R over Fourmile Run carry?

About 100 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is T405 Hoods Mill R over Fourmile Run?

The structure is 75 ft (22.9 m) long with a longest span of 70 ft (21.3 m) and a deck 33 ft wide.

Who owns T405 Hoods Mill R over Fourmile Run?

It is owned by the Town or Township Highway Agency.