US Bridges

SR3977 over Coles Branch

Fair

Wake County, North Carolina · .1MI.W.JCT.HIGH House Rd. · Structure no. 000000001830676

Built
1992
33 years old
Condition
Fair
inspected February 2024
Type
Culvert
Prestressed Concrete
Length
28 ft
Daily traffic
20,500
2021 count
Owner
State
State Highway Agency

About this bridge

SR3977 over Coles Branch is a prestressed concrete culvert carrying SR3977 over Coles Branch in Wake County, North Carolina. It was built in 1992, so it is 33 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 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 20,500 vehicles a day, projected to reach 41,000 by 2040. The structure is 28 ft (8.5 m) long and 86 ft wide.

Location

Open in Google Maps
CarriesSR3977
CrossesColes Branch
Location.1MI.W.JCT.HIGH House Rd.
RouteState Highway 3977
CountyWake County
StateNorth Carolina
Coordinates35.7712, -78.30802
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialPrestressed Concrete
DeckNot applicable
Main spans0
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width86 ft (26.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,500 (2021)
Projected traffic41,000 by 2040
Trucks0%
Lanes on structure4
Traffic directionTwo-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 SR3977 over Coles Branch built?

It was built in 1992, making it 33 years old in 2025.

What condition is SR3977 over Coles 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 February 2024.

How much traffic does SR3977 over Coles Branch carry?

About 20,500 vehicles per day (2021 count).

How long is SR3977 over Coles Branch?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 86 ft wide.

Who owns SR3977 over Coles Branch?

It is owned by the State Highway Agency.