US Bridges

Sundown Road over Hawlings River

Good

Montgomery County, Maryland · 2.0 Miles East of Md 108 · Structure no. 200000M-0122010

Built
1996
29 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
55 ft
1 main span
Daily traffic
4,567
2024 count
Owner
County
County Highway Agency

About this bridge

Sundown Road over Hawlings River is a steel stringer/multi-beam or girder carrying Sundown Road over Hawlings River in Montgomery County, Maryland. It was built in 1996, so it is 29 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 4,567 vehicles a day, roughly 5% of them trucks, projected to reach 5,744 by 2044. The structure is 55 ft (16.9 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesSundown Road
CrossesHawlings River
Location2.0 Miles East of Md 108
RouteCounty Highway 54
Coordinates39.21759, -77.10562
Functional classRural Minor Collector

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating77.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length55 ft (16.9 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,567 (2024)
Projected traffic5,744 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Sundown Road over Hawlings River built?

It was built in 1996, making it 29 years old in 2025.

What condition is Sundown 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 August 2024.

How much traffic does Sundown Road over Hawlings River carry?

About 4,567 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Sundown Road over Hawlings River?

The structure is 55 ft (16.9 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns Sundown Road over Hawlings River?

It is owned by the County Highway Agency.