US Bridges

Zion Road over Hawlings River

PoorPosted for load

Montgomery County, Maryland · 2.8 Miles North of Md 108 · Structure no. 200000M-0121010

Built
1930
95 years old
Condition
Poor
inspected February 2024
Type
Arch - Deck
Concrete
Length
22 ft
1 main span
Daily traffic
1,075
2024 count
Owner
County
County Highway Agency

About this bridge

Zion Road over Hawlings River is a concrete arch - deck carrying Zion Road 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 1,075 vehicles a day, roughly 3% of them trucks, projected to reach 1,450 by 2044. The structure is 22 ft (6.7 m) long and 14 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesZion Road
CrossesHawlings River
Location2.8 Miles North of Md 108
RouteCounty Highway 64
CountyMontgomery County
StateMaryland
Coordinates39.21367, -77.09042
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating5 US tons
Inventory rating5 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width14 ft (4.4 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,075 (2024)
Projected traffic1,450 by 2044
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$285,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Zion Road over Hawlings River built?

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

What condition is Zion Road over Hawlings River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does Zion Road over Hawlings River carry?

About 1,075 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Zion Road over Hawlings River?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 14 ft wide.

Who owns Zion Road over Hawlings River?

It is owned by the County Highway Agency.