US Bridges

SH 78 over Maple Branch

Good

Collin County, Texas · 0.70 MI N of US 380 · Structure no. 180430028002033

Built
1966
59 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
23 ft
3 main spans
Daily traffic
6,993
2020 count
Owner
State
State Highway Agency

About this bridge

SH 78 over Maple Branch is a concrete culvert carrying SH 78 over Maple Branch in Collin County, Texas. It was built in 1966, so it is 59 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 6,993 vehicles a day, roughly 13% of them trucks, projected to reach 9,120 by 2037. The structure is 23 ft (7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 78
CrossesMaple Branch
Location0.70 MI N of US 380
RouteState Highway 78
CountyCollin County
StateTexas
Coordinates33.1659, -96.36902
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length23 ft (7 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,993 (2020)
Projected traffic9,120 by 2037
Trucks13%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 over Maple Branch built?

It was built in 1966, making it 59 years old in 2025.

What condition is SH 78 over Maple Branch 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 September 2023.

How much traffic does SH 78 over Maple Branch carry?

About 6,993 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is SH 78 over Maple Branch?

The structure is 23 ft (7 m) long with a longest span of 6 ft (1.8 m).

Who owns SH 78 over Maple Branch?

It is owned by the State Highway Agency.