US Bridges

Md 257 over CSX Trans

Fair

Charles County, Maryland · 0.08 Mile East of US 301 · Structure no. 100000080048010

Built
1967
58 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
152 ft
5 main spans
Daily traffic
6,290
2009 count
Owner
State
State Highway Agency

About this bridge

Md 257 over CSX Trans is a concrete continuous slab carrying Md 257 over CSX Trans in Charles County, Maryland. It was built in 1967, so it is 58 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 6,290 vehicles a day, roughly 8% of them trucks, projected to reach 7,875 by 2026. The structure is 152 ft (46.3 m) long and 50 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesMd 257
CrossesCSX Trans
Location0.08 Mile East of US 301
RouteState Highway 257
CountyCharles County
StateMaryland
Coordinates38.37927, -76.95526
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span34 ft (10.4 m)
Deck width50 ft (15.2 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,290 (2009)
Projected traffic7,875 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed98.8 mi (159 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$502,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 257 over CSX Trans built?

It was built in 1967, making it 58 years old in 2025.

What condition is Md 257 over CSX Trans 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 December 2023.

How much traffic does Md 257 over CSX Trans carry?

About 6,290 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 257 over CSX Trans?

The structure is 152 ft (46.3 m) long with a longest span of 34 ft (10.4 m) and a deck 50 ft wide.

Who owns Md 257 over CSX Trans?

It is owned by the State Highway Agency.