US Bridges

Mill Road over Conestoga Creek

Fair

Berks County, Pennsylvania · Hartz Mill Bridge · Structure no. 000000000005342

Built
1956
69 years old, rebuilt 2019
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
3,149
2024 count
Owner
County
County Highway Agency

About this bridge

Mill Road over Conestoga Creek is a prestressed concrete box beam or girders - multiple carrying Mill Road over Conestoga Creek in Berks County, Pennsylvania. It was built in 1956 and reconstructed in 2019, so it is 69 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 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 3,149 vehicles a day, roughly 1% of them trucks, projected to reach 3,800 by 2033. The structure is 43 ft (13.1 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMill Road
CrossesConestoga Creek
LocationHartz Mill Bridge
RouteCity Street 0
Coordinates40.15366, -75.88402
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length43 ft (13.1 m)
Longest span42 ft (12.8 m)
Deck width29 ft (8.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,149 (2024)
Projected traffic3,800 by 2033
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Mill Road over Conestoga Creek built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2019.

What condition is Mill Road over Conestoga 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 September 2023.

How much traffic does Mill Road over Conestoga Creek carry?

About 3,149 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Mill Road over Conestoga Creek?

The structure is 43 ft (13.1 m) long with a longest span of 42 ft (12.8 m) and a deck 29 ft wide.

Who owns Mill Road over Conestoga Creek?

It is owned by the County Highway Agency.