US Bridges

Md 370 over Miles River

Fair

Talbot County, Maryland · 0.98 Mile North of Md 33 · Structure no. 100000200018010

Built
1984
41 years old
Condition
Fair
inspected September 2024
Type
Movable - Bascule
Steel
Length
1,279 ft
1 main span
Daily traffic
2,973
2024 count
Owner
State
State Highway Agency

About this bridge

Md 370 over Miles River is a steel movable - bascule carrying Md 370 over Miles River in Talbot County, Maryland. It was built in 1984, so it is 41 years old, younger 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 2,973 vehicles a day, roughly 8% of them trucks, projected to reach 3,701 by 2044. The structure is 1,279 ft (389.8 m) long and 31 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesMd 370
CrossesMiles River
Location0.98 Mile North of Md 33
RouteState Highway 370
CountyTalbot County
StateMaryland
Coordinates38.79339, -76.1248
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33.5 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+19 approach)
Design loadHS 20
Structure length1,279 ft (389.8 m)
Longest span73 ft (22.3 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,973 (2024)
Projected traffic3,701 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Md 370 over Miles River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Md 370 over Miles River 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 September 2024.

How much traffic does Md 370 over Miles River carry?

About 2,973 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Md 370 over Miles River?

The structure is 1,279 ft (389.8 m) long with a longest span of 73 ft (22.3 m) and a deck 31 ft wide.

Who owns Md 370 over Miles River?

It is owned by the State Highway Agency.