US Bridges

FM 100 over Bois Darc Creek Relief

Fair

Fannin County, Texas · 2.1 MI S of FM 273 · Structure no. 010750017404023

Built
1952
73 years old, rebuilt 1994
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
43 ft
5 main spans
Daily traffic
258
2020 count
Owner
State
State Highway Agency

About this bridge

FM 100 over Bois Darc Creek Relief is a concrete culvert carrying FM 100 over Bois Darc Creek Relief in Fannin County, Texas. It was built in 1952 and reconstructed in 1994, so it is 73 years old, older 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 258 vehicles a day, roughly 9% of them trucks, projected to reach 270 by 2033. The structure is 43 ft (13.1 m) long and 57 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesFM 100
CrossesBois Darc Creek Relief
Location2.1 MI S of FM 273
RouteState Highway 100
StateTexas
Coordinates33.76281, -95.91651
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable 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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span8 ft (2.4 m)
Deck width57 ft (17.5 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic258 (2020)
Projected traffic270 by 2033
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 100 over Bois Darc Creek Relief built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1994.

What condition is FM 100 over Bois Darc Creek Relief 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 100 over Bois Darc Creek Relief carry?

About 258 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is FM 100 over Bois Darc Creek Relief?

The structure is 43 ft (13.1 m) long with a longest span of 8 ft (2.4 m) and a deck 57 ft wide.

Who owns FM 100 over Bois Darc Creek Relief?

It is owned by the State Highway Agency.