US Bridges

Monument Road over Grindstone Run

Fair

Frederick County, Maryland · 1.55 MI West of Md 17 · Structure no. 200000F-1638030

Built
1977
48 years old
Condition
Fair
inspected May 2024
Type
Culvert
Steel
Length
35 ft
Daily traffic
311
2024 count
Owner
County
County Highway Agency

About this bridge

Monument Road over Grindstone Run is a steel culvert carrying Monument Road over Grindstone Run in Frederick County, Maryland. It was built in 1977, so it is 48 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 311 vehicles a day, roughly 10% of them trucks, projected to reach 371 by 2044. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMonument Road
CrossesGrindstone Run
Location1.55 MI West of Md 17
RouteCounty Highway 248
CountyFrederick County
StateMaryland
Coordinates39.51411, -77.59329
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating75 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans0
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span0 ft (0 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic311 (2024)
Projected traffic371 by 2044
Trucks10%
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 Monument Road over Grindstone Run built?

It was built in 1977, making it 48 years old in 2025.

What condition is Monument Road over Grindstone 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 May 2024.

How much traffic does Monument Road over Grindstone Run carry?

About 311 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Monument Road over Grindstone Run?

The structure is 35 ft (10.7 m) long.

Who owns Monument Road over Grindstone Run?

It is owned by the County Highway Agency.