US Bridges

SR1311N. over Michael Branch

Good

Alamance County, North Carolina · 0.2MI.N.OFJCT.US70 · Structure no. 000000000010409

Built
2004
21 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
130 ft
2 main spans
Daily traffic
15,000
2021 count
Owner
State
State Highway Agency

About this bridge

SR1311N. over Michael Branch is a prestressed concrete stringer/multi-beam or girder carrying SR1311N. over Michael Branch in Alamance County, North Carolina. It was built in 2004, so it is 21 years old, younger than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,000 vehicles a day, roughly 6% of them trucks, projected to reach 30,000 by 2040. The structure is 130 ft (39.6 m) long and 41 ft wide.

CarriesSR1311N.
CrossesMichael Branch
Location0.2MI.N.OFJCT.US70
RouteState Highway 1311
Coordinates36.08367, -79.52587
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating50.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length130 ft (39.6 m)
Longest span62 ft (18.8 m)
Deck width41 ft (12.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,000 (2021)
Projected traffic30,000 by 2040
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 SR1311N. over Michael Branch built?

It was built in 2004, making it 21 years old in 2025.

What condition is SR1311N. over Michael Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does SR1311N. over Michael Branch carry?

About 15,000 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1311N. over Michael Branch?

The structure is 130 ft (39.6 m) long with a longest span of 62 ft (18.8 m) and a deck 41 ft wide.

Who owns SR1311N. over Michael Branch?

It is owned by the State Highway Agency.