US Bridges

Big Spring Road over Is 70

Fair

Washington County, Maryland · 0.32 MI S of Clearspring · Structure no. 100000210098010

Built
1965
60 years old, rebuilt 1973
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
263 ft
5 main spans
Daily traffic
1,248
2020 count
Owner
State
State Highway Agency

About this bridge

Big Spring Road over Is 70 is a steel stringer/multi-beam or girder carrying Big Spring Road over Is 70 in Washington County, Maryland. It was built in 1965 and reconstructed in 1973, so it is 60 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 1,248 vehicles a day, roughly 5% of them trucks, projected to reach 1,523 by 2040. The structure is 263 ft (80.2 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesBig Spring Road
CrossesIs 70
Location0.32 MI S of Clearspring
RouteCounty Highway 91
CountyWashington County
StateMaryland
Coordinates39.6489, -77.93036
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.5 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length263 ft (80.2 m)
Longest span68 ft (20.7 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,248 (2020)
Projected traffic1,523 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Big Spring Road over Is 70 built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1973.

What condition is Big Spring Road over Is 70 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 April 2024.

How much traffic does Big Spring Road over Is 70 carry?

About 1,248 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Big Spring Road over Is 70?

The structure is 263 ft (80.2 m) long with a longest span of 68 ft (20.7 m) and a deck 33 ft wide.

Who owns Big Spring Road over Is 70?

It is owned by the State Highway Agency.