US Bridges

Md 136 over Big Branch

Fair

Harford County, Maryland · 2.64 Miles North of Md 24 · Structure no. 100000120030010

Built
1934
91 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Concrete
Length
33 ft
1 main span
Daily traffic
2,420
2023 count
Owner
State
State Highway Agency

About this bridge

Md 136 over Big Branch is a concrete tee beam carrying Md 136 over Big Branch in Harford County, Maryland. It was built in 1934, so it is 91 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 6 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 2,420 vehicles a day, roughly 8% of them trucks, projected to reach 2,893 by 2045. The structure is 33 ft (10.1 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMd 136
CrossesBig Branch
Location2.64 Miles North of Md 24
RouteState Highway 136
CountyHarford County
StateMaryland
Coordinates39.6815, -76.46605
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating51.5 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 width34 ft (10.5 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,420 (2023)
Projected traffic2,893 by 2045
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$75,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 136 over Big Branch built?

It was built in 1934, making it 91 years old in 2025.

What condition is Md 136 over Big 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 December 2023.

How much traffic does Md 136 over Big Branch carry?

About 2,420 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Md 136 over Big Branch?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 34 ft wide.

Who owns Md 136 over Big Branch?

It is owned by the State Highway Agency.