US Bridges

Gold Mine Road over Hawlings River

Good

Montgomery County, Maryland · 0.4 Miles West of Md 650 · Structure no. 200000M-0096010

Built
2019
6 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
2,792
2022 count
Owner
County
County Highway Agency

About this bridge

Gold Mine Road over Hawlings River is a prestressed concrete slab carrying Gold Mine Road over Hawlings River in Montgomery County, Maryland. It was built in 2019, so it is 6 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 2,792 vehicles a day, roughly 3% of them trucks, projected to reach 3,071 by 2042. The structure is 58 ft (17.7 m) long and 45 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesGold Mine Road
CrossesHawlings River
Location0.4 Miles West of Md 650
RouteCounty Highway 3937
CountyMontgomery County
StateMaryland
Coordinates39.17629, -77.0316
Functional classRural Local

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating96.8 US tons
Inventory rating74.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length58 ft (17.7 m)
Longest span55 ft (16.8 m)
Deck width45 ft (13.8 m)
Roadway width3 ft (1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,792 (2022)
Projected traffic3,071 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Gold Mine Road over Hawlings River built?

It was built in 2019, making it 6 years old in 2025.

What condition is Gold Mine Road over Hawlings River 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 October 2023.

How much traffic does Gold Mine Road over Hawlings River carry?

About 2,792 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Gold Mine Road over Hawlings River?

The structure is 58 ft (17.7 m) long with a longest span of 55 ft (16.8 m) and a deck 45 ft wide.

Who owns Gold Mine Road over Hawlings River?

It is owned by the County Highway Agency.