US Bridges

Mayberry Road over Big Pipe Creek

Fair

Carroll County, Maryland · 0.06 MI N of Unger RD · Structure no. 200000CL0219010

Built
1987
38 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
111 ft
2 main spans
Daily traffic
762
2021 count
Owner
County
County Highway Agency

About this bridge

Mayberry Road over Big Pipe Creek is a steel continuous stringer/multi-beam or girder carrying Mayberry Road over Big Pipe Creek in Carroll County, Maryland. It was built in 1987, so it is 38 years old, younger than the Maryland average of 52.6 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 762 vehicles a day, roughly 5% of them trucks, projected to reach 1,250 by 2041. The structure is 111 ft (33.7 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMayberry Road
CrossesBig Pipe Creek
Location0.06 MI N of Unger RD
RouteCounty Highway 65
CountyCarroll County
StateMaryland
Coordinates39.66633, -77.10531
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.4 US tons
Inventory rating41.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length111 ft (33.7 m)
Longest span53 ft (16.2 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic762 (2021)
Projected traffic1,250 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Mayberry Road over Big Pipe Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Mayberry Road over Big Pipe 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 August 2023.

How much traffic does Mayberry Road over Big Pipe Creek carry?

About 762 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Mayberry Road over Big Pipe Creek?

The structure is 111 ft (33.7 m) long with a longest span of 53 ft (16.2 m) and a deck 33 ft wide.

Who owns Mayberry Road over Big Pipe Creek?

It is owned by the County Highway Agency.