US Bridges

Md 136 over Island Branch

Fair

Harford County, Maryland · 1.0 Mile South of Md 23 · Structure no. 100000120029010

Built
1935
90 years old, rebuilt 1959
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
1,901
2009 count
Owner
State
State Highway Agency

About this bridge

Md 136 over Island Branch is a steel stringer/multi-beam or girder carrying Md 136 over Island Branch in Harford County, Maryland. It was built in 1935 and reconstructed in 1959, so it is 90 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 1,901 vehicles a day, roughly 8% of them trucks, projected to reach 2,480 by 2026. The structure is 34 ft (10.4 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesMd 136
CrossesIsland Branch
Location1.0 Mile South of Md 23
RouteState Highway 136
CountyHarford County
StateMaryland
Coordinates39.70398, -76.51477
Functional classRural Major 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
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.
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
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating33.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,901 (2009)
Projected traffic2,480 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Md 136 over Island Branch built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1959.

What condition is Md 136 over Island 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 136 over Island Branch carry?

About 1,901 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 136 over Island Branch?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 31 ft wide.

Who owns Md 136 over Island Branch?

It is owned by the State Highway Agency.