US Bridges

SH 78 Bus F over Elm Creek Tributary

Good

Collin County, Texas · 0.85 MI N of FM 1778 · Structure no. 180430028107015

Built
1924
101 years old, rebuilt 2020
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
578
2023 count
Owner
State
State Highway Agency

About this bridge

SH 78 Bus F over Elm Creek Tributary is a concrete culvert carrying SH 78 Bus F over Elm Creek Tributary in Collin County, Texas. It was built in 1924 and reconstructed in 2020, so it is 101 years old, older 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 578 vehicles a day, roughly 9% of them trucks, projected to reach 1,063 by 2040. The structure is 25 ft (7.5 m) long and 62 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSH 78 Bus F
CrossesElm Creek Tributary
Location0.85 MI N of FM 1778
RouteState Highway 78
StateTexas
Coordinates33.09212, -96.41316
Functional classRural Minor 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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
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 spans2
Design loadUnknown
Structure length25 ft (7.5 m)
Longest span10 ft (3 m)
Deck width62 ft (19 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic578 (2023)
Projected traffic1,063 by 2040
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 SH 78 Bus F over Elm Creek Tributary built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 2020.

What condition is SH 78 Bus F over Elm Creek Tributary 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 October 2023.

How much traffic does SH 78 Bus F over Elm Creek Tributary carry?

About 578 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SH 78 Bus F over Elm Creek Tributary?

The structure is 25 ft (7.5 m) long with a longest span of 10 ft (3 m) and a deck 62 ft wide.

Who owns SH 78 Bus F over Elm Creek Tributary?

It is owned by the State Highway Agency.