US Bridges

FM-3479/HARMON RD over Trib to Big Fossil Creek

Good

Tarrant County, Texas · .6 MI W of US-287/US-81 · Structure no. 022200355101001

Built
1992
33 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
49 ft
5 main spans
Daily traffic
8,242
2022 count
Owner
State
State Highway Agency

About this bridge

FM-3479/HARMON RD over Trib to Big Fossil Creek is a concrete culvert carrying FM-3479/HARMON RD over Trib to Big Fossil Creek in Tarrant County, Texas. It was built in 1992, so it is 33 years old, younger than the Texas average of 44.4 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 8,242 vehicles a day, roughly 1% of them trucks, projected to reach 11,539 by 2042. The structure is 49 ft (14.9 m) long and 69 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesFM-3479/HARMON RD
CrossesTrib to Big Fossil Creek
Location.6 MI W of US-287/US-81
RouteState Highway 3479
CountyTarrant County
StateTexas
Coordinates32.89431, -97.33568
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span9 ft (2.7 m)
Deck width69 ft (21 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,242 (2022)
Projected traffic11,539 by 2042
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$5,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM-3479/HARMON RD over Trib to Big Fossil Creek built?

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

What condition is FM-3479/HARMON RD over Trib to Big Fossil Creek 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 July 2023.

How much traffic does FM-3479/HARMON RD over Trib to Big Fossil Creek carry?

About 8,242 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is FM-3479/HARMON RD over Trib to Big Fossil Creek?

The structure is 49 ft (14.9 m) long with a longest span of 9 ft (2.7 m) and a deck 69 ft wide.

Who owns FM-3479/HARMON RD over Trib to Big Fossil Creek?

It is owned by the State Highway Agency.