US Bridges

FM 1377 over Harrington Branch

Fair

Collin County, Texas · 3.00 MI N of FM 2756 · Structure no. 180430139101002

Built
1955
70 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
939
2019 count
Owner
State
State Highway Agency

About this bridge

FM 1377 over Harrington Branch is a concrete culvert carrying FM 1377 over Harrington Branch in Collin County, Texas. It was built in 1955, so it is 70 years old, older 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 939 vehicles a day, roughly 9% of them trucks, projected to reach 830 by 2033. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesFM 1377
CrossesHarrington Branch
Location3.00 MI N of FM 2756
RouteState Highway 1377
CountyCollin County
StateTexas
Coordinates33.24537, -96.44035
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to 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 spans4
Design loadOther
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic939 (2019)
Projected traffic830 by 2033
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Harrington Branch built?

It was built in 1955, making it 70 years old in 2025.

What condition is FM 1377 over Harrington Branch 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 FM 1377 over Harrington Branch carry?

About 939 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is FM 1377 over Harrington Branch?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m).

Who owns FM 1377 over Harrington Branch?

It is owned by the State Highway Agency.