US Bridges

Is 70 over Long Branch

Fair

Frederick County, Maryland · 0.23 M E of Br No 1018400 · Structure no. 100000100185030

Built
1985
40 years old
Condition
Fair
inspected August 2024
Type
Culvert
Steel
Length
66 ft
Daily traffic
62,311
2013 count
Owner
State
State Highway Agency

About this bridge

Is 70 over Long Branch is a steel culvert carrying Is 70 over Long Branch in Frederick County, Maryland. It was built in 1985, so it is 40 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 62,311 vehicles a day, roughly 8% of them trucks, projected to reach 89,242 by 2029. The structure is 66 ft (20.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIs 70
CrossesLong Branch
Location0.23 M E of Br No 1018400
RouteInterstate 70
CountyFrederick County
StateMaryland
Coordinates39.40457, -77.35762
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans0
Design loadHS 20
Structure length66 ft (20.2 m)
Longest span30 ft (9.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62,311 (2013)
Projected traffic89,242 by 2029
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 70 over Long Branch built?

It was built in 1985, making it 40 years old in 2025.

What condition is Is 70 over Long Branch 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 August 2024.

How much traffic does Is 70 over Long Branch carry?

About 62,311 vehicles per day (2013 count), of which roughly 8% are trucks.

How long is Is 70 over Long Branch?

The structure is 66 ft (20.2 m) long with a longest span of 30 ft (9.1 m).

Who owns Is 70 over Long Branch?

It is owned by the State Highway Agency.