US Bridges

Naylors Mill Road over Big Pipe Creek

Fair

Carroll County, Maryland · 0.41 MI N of Md 77 · Structure no. 200000CL0230010

Built
1947
78 years old, rebuilt 1984
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
110 ft
2 main spans
Daily traffic
24
2021 count
Owner
County
County Highway Agency

About this bridge

Naylors Mill Road over Big Pipe Creek is a steel stringer/multi-beam or girder carrying Naylors Mill Road over Big Pipe Creek in Carroll County, Maryland. It was built in 1947 and reconstructed in 1984, so it is 78 years old, older 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 24 vehicles a day, roughly 8% of them trucks, projected to reach 40 by 2041. The structure is 110 ft (33.5 m) long and 17 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNaylors Mill Road
CrossesBig Pipe Creek
Location0.41 MI N of Md 77
RouteCounty Highway 18
CountyCarroll County
StateMaryland
Coordinates39.61229, -77.2546
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating73.5 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length110 ft (33.5 m)
Longest span53 ft (16.2 m)
Deck width17 ft (5.3 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2021)
Projected traffic40 by 2041
Trucks8%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$743,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Naylors Mill Road over Big Pipe Creek built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1984.

What condition is Naylors Mill 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 May 2023.

How much traffic does Naylors Mill Road over Big Pipe Creek carry?

About 24 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Naylors Mill Road over Big Pipe Creek?

The structure is 110 ft (33.5 m) long with a longest span of 53 ft (16.2 m) and a deck 17 ft wide.

Who owns Naylors Mill Road over Big Pipe Creek?

It is owned by the County Highway Agency.