RM 2400 over Big Canyon

Fair

Terrell County, Texas · 4.8 MI E of RM 2886 · Structure no. 062220229702001

Built: 1961; 64 years old
Condition: Fair; inspected August 2023
Type: Slab; Concrete
Length: 250 ft; 10 main spans
Daily traffic: 56; 2022 count
Owner: State; State Highway Agency

About this bridge

RM 2400 over Big Canyon is a concrete slab carrying RM 2400 over Big Canyon in Terrell County, Texas. It was built in 1961, so it is 64 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 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 56 vehicles a day, roughly 14% of them trucks, projected to reach 78 by 2040. The structure is 250 ft (76.2 m) long and 25 ft wide. If it were closed, the detour would be 55.3 mi (89 km).

Location

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CarriesRM 2400

CrossesBig Canyon

Location4.8 MI E of RM 2886

RouteState Highway 2400

CountyTerrell County

StateTexas

Coordinates30.39069, -102.23273

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.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.

Last inspectionAugust 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is

Waterway adequacy6: Equal to present minimum criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating75 US tons

Inventory rating45 US tons

Structure

Structure typeSlab

MaterialConcrete

DeckConcrete, cast-in-place

Main spans10

Design loadOther

Structure length250 ft (76.2 m)

Longest span25 ft (7.6 m)

Deck width25 ft (7.7 m)

Roadway width23 ft (7.1 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (2022)

Projected traffic78 by 2040

Trucks14%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed55.3 mi (89 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 RM 2400 over Big Canyon built?

It was built in 1961, making it 64 years old in 2025.

What condition is RM 2400 over Big Canyon 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 August 2023.

How much traffic does RM 2400 over Big Canyon carry?

About 56 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is RM 2400 over Big Canyon?

The structure is 250 ft (76.2 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns RM 2400 over Big Canyon?

It is owned by the State Highway Agency.