US Bridges

Duncan ST over Black Fork CR TR

Fair

Smith County, Texas · 0.05 MI W of Lp 323 · Structure no. 102120B01415001

Built
1987
38 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
28 ft
3 main spans
Daily traffic
17,330
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Duncan ST over Black Fork CR TR is a concrete culvert carrying Duncan ST over Black Fork CR TR in Smith County, Texas. It was built in 1987, so it is 38 years old, younger than the Texas average of 44.4 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 17,330 vehicles a day, projected to reach 1,000 by 2035. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesDuncan ST
CrossesBlack Fork CR TR
Location0.05 MI W of Lp 323
RouteCity Street 0
CountySmith County
StateTexas
Coordinates32.37213, -95.26873
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,330 (2015)
Projected traffic1,000 by 2035
Trucks0%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Duncan ST over Black Fork CR TR built?

It was built in 1987, making it 38 years old in 2025.

What condition is Duncan ST over Black Fork CR TR 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 September 2023.

How much traffic does Duncan ST over Black Fork CR TR carry?

About 17,330 vehicles per day (2015 count).

How long is Duncan ST over Black Fork CR TR?

The structure is 28 ft (8.5 m) long with a longest span of 9 ft (2.7 m).

Who owns Duncan ST over Black Fork CR TR?

It is owned by the City or Municipal Highway Agency.