US Bridges

Md 97 over Hawlings River

Fair

Montgomery County, Maryland · 0.88 Mile South of Md 650 · Structure no. 100000150011010

Built
1930
95 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Concrete
Length
33 ft
1 main span
Daily traffic
10,740
2009 count
Owner
State
State Highway Agency

About this bridge

Md 97 over Hawlings River is a concrete tee beam carrying Md 97 over Hawlings River in Montgomery County, Maryland. It was built in 1930, so it is 95 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 5 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 10,740 vehicles a day, roughly 8% of them trucks, projected to reach 11,244 by 2026. The structure is 33 ft (10.1 m) long and 27 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesMd 97
CrossesHawlings River
Location0.88 Mile South of Md 650
RouteState Highway 97
CountyMontgomery County
StateMaryland
Coordinates39.20934, -77.06268
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.4 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,740 (2009)
Projected traffic11,244 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$59,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 97 over Hawlings River built?

It was built in 1930, making it 95 years old in 2025.

What condition is Md 97 over Hawlings River 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 March 2024.

How much traffic does Md 97 over Hawlings River carry?

About 10,740 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 97 over Hawlings River?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns Md 97 over Hawlings River?

It is owned by the State Highway Agency.