US Bridges

Md 175 Wbr over Snowden River Parkway

Good

Howard County, Maryland · 0.84 Mile West of Md 108 · Structure no. 100000130153014

Built
2001
24 years old
Condition
Good
inspected September 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
225 ft
2 main spans
Daily traffic
32,168
2012 count
Owner
State
State Highway Agency

About this bridge

Md 175 Wbr over Snowden River Parkway is a steel continuous girder and floorbeam system carrying Md 175 Wbr over Snowden River Parkway in Howard County, Maryland. It was built in 2001, so it is 24 years old, younger than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 32,168 vehicles a day, roughly 9% of them trucks, projected to reach 41,819 by 2032. The structure is 225 ft (68.6 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMd 175 Wbr
CrossesSnowden River Parkway
Location0.84 Mile West of Md 108
RouteState Highway 175
Coordinates39.19133, -76.8116
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97 US tons
Inventory rating58 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length225 ft (68.6 m)
Longest span110 ft (33.5 m)
Deck width54 ft (16.5 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,168 (2012)
Projected traffic41,819 by 2032
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 175 Wbr over Snowden River Parkway built?

It was built in 2001, making it 24 years old in 2025.

What condition is Md 175 Wbr over Snowden River Parkway in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Md 175 Wbr over Snowden River Parkway carry?

About 32,168 vehicles per day (2012 count), of which roughly 9% are trucks.

How long is Md 175 Wbr over Snowden River Parkway?

The structure is 225 ft (68.6 m) long with a longest span of 110 ft (33.5 m) and a deck 54 ft wide.

Who owns Md 175 Wbr over Snowden River Parkway?

It is owned by the State Highway Agency.