US Bridges

Marsh Road over Shanks Creek

PoorPosted for load

Somerset County, Maryland · Smith Island · Structure no. 200000S-0021010

Built
1971
54 years old, rebuilt 1984
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
92 ft
12 main spans
Daily traffic
52
2024 count
Owner
County
County Highway Agency

About this bridge

Marsh Road over Shanks Creek is a wood or timber stringer/multi-beam or girder carrying Marsh Road over Shanks Creek in Somerset County, Maryland. It was built in 1971 and reconstructed in 1984, so it is 54 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 52 vehicles a day, roughly 5% of them trucks, projected to reach 71 by 2044. The structure is 92 ft (28 m) long and 14 ft wide.

CarriesMarsh Road
CrossesShanks Creek
LocationSmith Island
RouteCounty Highway 254
Coordinates37.99342, -76.04214
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating23 US tons
Inventory rating16.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans12
Design loadUnknown
Structure length92 ft (28 m)
Longest span11 ft (3.4 m)
Deck width14 ft (4.4 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52 (2024)
Projected traffic71 by 2044
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$509,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Marsh Road over Shanks Creek built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1984.

What condition is Marsh Road over Shanks Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Marsh Road over Shanks Creek carry?

About 52 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Marsh Road over Shanks Creek?

The structure is 92 ft (28 m) long with a longest span of 11 ft (3.4 m) and a deck 14 ft wide.

Who owns Marsh Road over Shanks Creek?

It is owned by the County Highway Agency.