US Bridges

SR1311 over Michael Branch

Good

Alamance County, North Carolina · 0.2MI.N.OF JCT.US70 · Structure no. 000000000010410

Built
2004
21 years old
Condition
Good
inspected January 2025
Type
Slab
Prestressed Concrete
Length
132 ft
2 main spans
Daily traffic
16,500
2019 count
Owner
State
State Highway Agency

About this bridge

SR1311 over Michael Branch is a prestressed concrete slab carrying SR1311 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 16,500 vehicles a day, roughly 6% of them trucks, projected to reach 33,000 by 2040. The structure is 132 ft (40.2 m) long and 36 ft wide.

CarriesSR1311
CrossesMichael Branch
Location0.2MI.N.OF JCT.US70
RouteState Highway 1311
Coordinates36.08359, -79.52602
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.
Superstructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable 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 rating81.9 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length132 ft (40.2 m)
Longest span62 ft (18.8 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,500 (2019)
Projected traffic33,000 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 SR1311 over Michael Branch built?

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

What condition is SR1311 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 SR1311 over Michael Branch carry?

About 16,500 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is SR1311 over Michael Branch?

The structure is 132 ft (40.2 m) long with a longest span of 62 ft (18.8 m) and a deck 36 ft wide.

Who owns SR1311 over Michael Branch?

It is owned by the State Highway Agency.