US Bridges

US 380 over SH 78

Fair

Collin County, Texas · At Int US 380 & SH 78 · Structure no. 180430013504234

Built
2011
14 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
271 ft
2 main spans
Daily traffic
22,010
2023 count
Owner
State
State Highway Agency

About this bridge

US 380 over SH 78 is a prestressed concrete stringer/multi-beam or girder carrying US 380 over SH 78 in Collin County, Texas. It was built in 2011, so it is 14 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 22,010 vehicles a day, roughly 12% of them trucks, projected to reach 27,150 by 2037. The structure is 271 ft (82.6 m) long and 95 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 380
CrossesSH 78
LocationAt Int US 380 & SH 78
RouteU.S. Route 380
StateTexas
Coordinates33.15797, -96.37656
Functional classRural Principal Arterial - Other

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2 (+1 approach)
Design loadHL 93
Structure length271 ft (82.6 m)
Longest span114 ft (34.7 m)
Deck width95 ft (29 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,010 (2023)
Projected traffic27,150 by 2037
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 380 over SH 78 built?

It was built in 2011, making it 14 years old in 2025.

What condition is US 380 over SH 78 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 May 2023.

How much traffic does US 380 over SH 78 carry?

About 22,010 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 380 over SH 78?

The structure is 271 ft (82.6 m) long with a longest span of 114 ft (34.7 m) and a deck 95 ft wide.

Who owns US 380 over SH 78?

It is owned by the State Highway Agency.