US Bridges

Md 299 over Herring Branch

Fair

Kent County, Maryland · 0.46 M S of Cecil CO Line · Structure no. 100000140017010

Built
1913
112 years old, rebuilt 1932
Condition
Fair
inspected January 2025
Type
Arch - Deck
Concrete
Length
31 ft
1 main span
Daily traffic
753
2013 count
Owner
State
State Highway Agency

About this bridge

Md 299 over Herring Branch is a concrete arch - deck carrying Md 299 over Herring Branch in Kent County, Maryland. It was built in 1913 and reconstructed in 1932, so it is 112 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 753 vehicles a day, roughly 8% of them trucks, projected to reach 1,201 by 2026. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMd 299
CrossesHerring Branch
Location0.46 M S of Cecil CO Line
RouteState Highway 299
CountyKent County
StateMaryland
Coordinates39.37182, -75.80371
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.5 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic753 (2013)
Projected traffic1,201 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$50,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 299 over Herring Branch built?

It was built in 1913, making it 112 years old in 2025. It was reconstructed in 1932.

What condition is Md 299 over Herring Branch 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 January 2025.

How much traffic does Md 299 over Herring Branch carry?

About 753 vehicles per day (2013 count), of which roughly 8% are trucks.

How long is Md 299 over Herring Branch?

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 23 ft wide.

Who owns Md 299 over Herring Branch?

It is owned by the State Highway Agency.