US Bridges

Carrollton Road over Deep Run

Fair

Carroll County, Maryland · 0.02 MI W of Lees Mill RD · Structure no. 200000CL0360010

Built
1960
65 years old, rebuilt 1983
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
709
2021 count
Owner
County
County Highway Agency

About this bridge

Carrollton Road over Deep Run is a steel stringer/multi-beam or girder carrying Carrollton Road over Deep Run in Carroll County, Maryland. It was built in 1960 and reconstructed in 1983, so it is 65 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 709 vehicles a day, roughly 3% of them trucks, projected to reach 1,170 by 2041. The structure is 31 ft (9.5 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCarrollton Road
CrossesDeep Run
Location0.02 MI W of Lees Mill RD
RouteCounty Highway 459
CountyCarroll County
StateMaryland
Coordinates39.55443, -76.87269
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 geometry4: Meets minimum tolerable limits to be left in place as is
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
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length31 ft (9.5 m)
Longest span27 ft (8.2 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic709 (2021)
Projected traffic1,170 by 2041
Trucks3%
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 Carrollton Road over Deep Run built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1983.

What condition is Carrollton Road over Deep 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 2023.

How much traffic does Carrollton Road over Deep Run carry?

About 709 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Carrollton Road over Deep Run?

The structure is 31 ft (9.5 m) long with a longest span of 27 ft (8.2 m) and a deck 26 ft wide.

Who owns Carrollton Road over Deep Run?

It is owned by the County Highway Agency.