US Bridges

Amoss Mill Road over Island Branch

Poor

Harford County, Maryland · 0.5 Miles SE of Md 136 · Structure no. 200000H-0177030

Built
1972
53 years old, rebuilt 2019
Condition
Poor
inspected September 2023
Type
Culvert
Steel
Length
27 ft
Daily traffic
99
2019 count
Owner
County
County Highway Agency

About this bridge

Amoss Mill Road over Island Branch is a steel culvert carrying Amoss Mill Road over Island Branch in Harford County, Maryland. It was built in 1972 and reconstructed in 2019, so it is 53 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.

It carries about 99 vehicles a day, roughly 5% of them trucks, projected to reach 121 by 2039. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAmoss Mill Road
CrossesIsland Branch
Location0.5 Miles SE of Md 136
RouteCounty Highway 29
CountyHarford County
StateMaryland
Coordinates39.70004, -76.50842
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating81 US tons
Inventory rating81 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans0
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2019)
Projected traffic121 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Amoss Mill Road over Island Branch built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2019.

What condition is Amoss Mill Road over Island Branch 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 September 2023.

How much traffic does Amoss Mill Road over Island Branch carry?

About 99 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Amoss Mill Road over Island Branch?

The structure is 27 ft (8.2 m) long with a longest span of 7 ft (2.1 m).

Who owns Amoss Mill Road over Island Branch?

It is owned by the County Highway Agency.