US Bridges

SR1717 over Herndon Creek

Fair

Chatham County, North Carolina · 2.5 Mi. E. Jct. US15/501 · Structure no. 000000000370060

Built
1977
48 years old
Condition
Fair
inspected November 2023
Type
Slab
Prestressed Concrete
Length
170 ft
4 main spans
Daily traffic
3,400
2015 count
Owner
State
State Highway Agency

About this bridge

SR1717 over Herndon Creek is a prestressed concrete slab carrying SR1717 over Herndon Creek in Chatham County, North Carolina. It was built in 1977, so it is 48 years old, older 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 3,400 vehicles a day, roughly 6% of them trucks, projected to reach 6,800 by 2040. The structure is 170 ft (51.8 m) long and 35 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesSR1717
CrossesHerndon Creek
Location2.5 Mi. E. Jct. US15/501
RouteState Highway 1717
CountyChatham County
StateNorth Carolina
Coordinates35.81672, -79.04082
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadH 15
Structure length170 ft (51.8 m)
Longest span41 ft (12.4 m)
Deck width35 ft (10.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2015)
Projected traffic6,800 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 SR1717 over Herndon Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is SR1717 over Herndon Creek 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 November 2023.

How much traffic does SR1717 over Herndon Creek carry?

About 3,400 vehicles per day (2015 count), of which roughly 6% are trucks.

How long is SR1717 over Herndon Creek?

The structure is 170 ft (51.8 m) long with a longest span of 41 ft (12.4 m) and a deck 35 ft wide.

Who owns SR1717 over Herndon Creek?

It is owned by the State Highway Agency.