US Bridges

FM 79 over Bois Darc Creek

Fair

Fannin County, Texas · 0.4 MI W of Lamar Cl · Structure no. 010750017404044

Built
1996
29 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
340 ft
3 main spans
Daily traffic
250
2020 count
Owner
State
State Highway Agency

About this bridge

FM 79 over Bois Darc Creek is a prestressed concrete stringer/multi-beam or girder carrying FM 79 over Bois Darc Creek in Fannin County, Texas. It was built in 1996, so it is 29 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 5 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 250 vehicles a day, roughly 8% of them trucks, projected to reach 180 by 2033. The structure is 340 ft (103.6 m) long and 32 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesFM 79
CrossesBois Darc Creek
Location0.4 MI W of Lamar Cl
RouteState Highway 79
CountyFannin County
StateTexas
Coordinates33.82361, -95.86103
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length340 ft (103.6 m)
Longest span120 ft (36.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic180 by 2033
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 FM 79 over Bois Darc Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is FM 79 over Bois Darc 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 October 2024.

How much traffic does FM 79 over Bois Darc Creek carry?

About 250 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is FM 79 over Bois Darc Creek?

The structure is 340 ft (103.6 m) long with a longest span of 120 ft (36.6 m) and a deck 32 ft wide.

Who owns FM 79 over Bois Darc Creek?

It is owned by the State Highway Agency.