US Bridges

FM 1377 over Sister Grove Creek

Good

Collin County, Texas · 2.20 MI SW of FM 2756 · Structure no. 180430139101005

Built
1975
50 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
320 ft
8 main spans
Daily traffic
3,466
2022 count
Owner
State
State Highway Agency

About this bridge

FM 1377 over Sister Grove Creek is a concrete stringer/multi-beam or girder carrying FM 1377 over Sister Grove Creek in Collin County, Texas. It was built in 1975, so it is 50 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 3,466 vehicles a day, roughly 4% of them trucks, projected to reach 1,800 by 2033. The structure is 320 ft (97.5 m) long and 42 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesFM 1377
CrossesSister Grove Creek
Location2.20 MI SW of FM 2756
RouteState Highway 1377
StateTexas
Coordinates33.19369, -96.4762
Functional classRural Major 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
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length320 ft (97.5 m)
Longest span40 ft (12.2 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,466 (2022)
Projected traffic1,800 by 2033
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 FM 1377 over Sister Grove Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is FM 1377 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 FM 1377 over Sister Grove Creek carry?

About 3,466 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is FM 1377 over Sister Grove Creek?

The structure is 320 ft (97.5 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.

Who owns FM 1377 over Sister Grove Creek?

It is owned by the State Highway Agency.