US Bridges

CR 470 over Sister Grove Creek

Good

Collin County, Texas · 0.85 MI E of FM 1827 · Structure no. 180430AA0430002

Built
1987
38 years old
Condition
Good
inspected May 2023
Type
Other
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
162
2022 count
Owner
County
County Highway Agency

About this bridge

CR 470 over Sister Grove Creek is a prestressed concrete other carrying CR 470 over Sister Grove Creek in Collin County, Texas. It was built in 1987, so it is 38 years old, younger 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 162 vehicles a day, roughly 7% of them trucks, projected to reach 265 by 2031. The structure is 61 ft (18.6 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCR 470
CrossesSister Grove Creek
Location0.85 MI E of FM 1827
RouteCounty Highway 470
CountyCollin County
StateTexas
Coordinates33.2471, -96.47473
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeOther
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length61 ft (18.6 m)
Longest span60 ft (18.3 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162 (2022)
Projected traffic265 by 2031
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 470 over Sister Grove Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is CR 470 over Sister Grove Creek 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 May 2023.

How much traffic does CR 470 over Sister Grove Creek carry?

About 162 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is CR 470 over Sister Grove Creek?

The structure is 61 ft (18.6 m) long with a longest span of 60 ft (18.3 m) and a deck 28 ft wide.

Who owns CR 470 over Sister Grove Creek?

It is owned by the County Highway Agency.