US 1 over Sulphur Spring Road

Fair

Baltimore County, Maryland · 0.33 MI N of Is 95 · Structure no. 100000030005010

Built: 1947; 78 years old, rebuilt 1978
Condition: Fair; inspected December 2023
Type: Stringer/Multi-beam or Girder; Steel
Length: 75 ft; 1 main span
Daily traffic: 11,542; 2009 count
Owner: State; State Highway Agency

About this bridge

US 1 over Sulphur Spring Road is a steel stringer/multi-beam or girder carrying US 1 over Sulphur Spring Road in Baltimore County, Maryland. It was built in 1947 and reconstructed in 1978, so it is 78 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 11,542 vehicles a day, roughly 8% of them trucks, projected to reach 13,077 by 2026. The structure is 75 ft (22.9 m) long and 81 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

No coordinates are recorded for this structure.

CarriesUS 1

CrossesSulphur Spring Road

Location0.33 MI N of Is 95

RouteU.S. Route 1

CountyBaltimore County

StateMaryland

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionDecember 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourBridge not over waterway

Structural evaluation6: Equal to present minimum criteria

Deck geometry9: Superior to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating83 US tons

Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder

MaterialSteel

DeckConcrete, cast-in-place

Main spans1

Design loadH 20

Structure length75 ft (22.9 m)

Longest span69 ft (21 m)

Deck width81 ft (24.6 m)

Roadway width68 ft (20.7 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,542 (2009)

Projected traffic13,077 by 2026

Trucks8%

Lanes on structure4

Traffic directionTwo-way traffic

CarriesHighway and pedestrian

CrossesHighway

Detour if closed1.9 mi (3 km)

TollOn a free road

National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency

Maintained byState Highway Agency

Historic statusNot eligible for the National Register of Historic Places

Work proposedRehabilitation because of general structure deterioration or inadequate strength

Estimated improvement cost$399,000

NavigationNot applicable (no waterway)

Frequently asked questions

When was US 1 over Sulphur Spring Road built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1978.

What condition is US 1 over Sulphur Spring Road 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 December 2023.

How much traffic does US 1 over Sulphur Spring Road carry?

About 11,542 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is US 1 over Sulphur Spring Road?

The structure is 75 ft (22.9 m) long with a longest span of 69 ft (21 m) and a deck 81 ft wide.

Who owns US 1 over Sulphur Spring Road?

It is owned by the State Highway Agency.