US Bridges

T618 Oldmill Road over Miller Run

Fair

Somerset County, Pennsylvania · 2 Mi.Sw.Of Berlin · Structure no. 000000000031840

Built
1916
109 years old
Condition
Fair
inspected June 2023
Type
Arch - Deck
Concrete
Length
42 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

T618 Oldmill Road over Miller Run is a concrete arch - deck carrying T618 Oldmill Road over Miller Run in Somerset County, Pennsylvania. It was built in 1916, so it is 109 years old, older 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 5 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 50 vehicles a day, roughly 1% of them trucks, projected to reach 63 by 2043. The structure is 42 ft (12.8 m) long and 17 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesT618 Oldmill Road
CrossesMiller Run
Location2 Mi.Sw.Of Berlin
RouteCity Street 0
CountySomerset County
StatePennsylvania
Coordinates39.90921, -78.99747
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length42 ft (12.8 m)
Longest span42 ft (12.8 m)
Deck width17 ft (5.3 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic63 by 2043
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$729,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T618 Oldmill Road over Miller Run built?

It was built in 1916, making it 109 years old in 2025.

What condition is T618 Oldmill Road over Miller 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 June 2023.

How much traffic does T618 Oldmill Road over Miller Run carry?

About 50 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is T618 Oldmill Road over Miller Run?

The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m) and a deck 17 ft wide.

Who owns T618 Oldmill Road over Miller Run?

It is owned by the County Highway Agency.