US Bridges

Md 258 over Md 4

Fair

Anne Arundel County, Maryland · 0.08 Mile West of Md 794 · Structure no. 100000020078010

Built
1961
64 years old, rebuilt 1986
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
240 ft
4 main spans
Daily traffic
7,962
2009 count
Owner
State
State Highway Agency

About this bridge

Md 258 over Md 4 is a steel stringer/multi-beam or girder carrying Md 258 over Md 4 in Anne Arundel County, Maryland. It was built in 1961 and reconstructed in 1986, so it is 64 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 7,962 vehicles a day, roughly 8% of them trucks, projected to reach 10,794 by 2026. The structure is 240 ft (73.2 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMd 258
CrossesMd 4
Location0.08 Mile West of Md 794
RouteState Highway 258
Coordinates38.79043, -76.66794
Functional classRural Minor Arterial

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.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating55.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span79 ft (24.1 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,962 (2009)
Projected traffic10,794 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 258 over Md 4 built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1986.

What condition is Md 258 over Md 4 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 July 2023.

How much traffic does Md 258 over Md 4 carry?

About 7,962 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 258 over Md 4?

The structure is 240 ft (73.2 m) long with a longest span of 79 ft (24.1 m) and a deck 37 ft wide.

Who owns Md 258 over Md 4?

It is owned by the State Highway Agency.