US Bridges

Md 174 over AMTRAK

Fair

Anne Arundel County, Maryland · 0.71 Mile South of Md 170 · Structure no. 100000020075010

Built
1931
94 years old
Condition
Fair
inspected November 2023
Type
Girder and Floorbeam System
Steel
Length
79 ft
1 main span
Daily traffic
19,339
2023 count
Owner
State
State Highway Agency

About this bridge

Md 174 over AMTRAK is a steel girder and floorbeam system carrying Md 174 over AMTRAK in Anne Arundel County, Maryland. It was built in 1931, so it is 94 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 5 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 19,339 vehicles a day, roughly 2% of them trucks, projected to reach 23,957 by 2043. The structure is 79 ft (24.1 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMd 174
CrossesAMTRAK
Location0.71 Mile South of Md 170
RouteState Highway 174
CountyAnne Arundel County
StateMaryland
Coordinates39.13448, -76.69731
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.5 US tons
Inventory rating54.5 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length79 ft (24.1 m)
Longest span75 ft (22.9 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,339 (2023)
Projected traffic23,957 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$162,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 174 over AMTRAK built?

It was built in 1931, making it 94 years old in 2025.

What condition is Md 174 over AMTRAK 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 November 2023.

How much traffic does Md 174 over AMTRAK carry?

About 19,339 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Md 174 over AMTRAK?

The structure is 79 ft (24.1 m) long with a longest span of 75 ft (22.9 m) and a deck 31 ft wide.

Who owns Md 174 over AMTRAK?

It is owned by the State Highway Agency.