US Bridges

US 377 over Leon Creek Branch

Good

Mason County, Texas · 9.15 MI SW of SH 29 · Structure no. 141570014904029

Built
1955
70 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
27 ft
4 main spans
Daily traffic
906
2020 count
Owner
State
State Highway Agency

About this bridge

US 377 over Leon Creek Branch is a concrete culvert carrying US 377 over Leon Creek Branch in Mason 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 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 906 vehicles a day, roughly 12% of them trucks, projected to reach 1,170 by 2033. The structure is 27 ft (8.2 m) long and 39 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS 377
CrossesLeon Creek Branch
Location9.15 MI SW of SH 29
RouteU.S. Route 377
CountyMason County
StateTexas
Coordinates30.76544, -99.45723
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 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 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
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length27 ft (8.2 m)
Longest span6 ft (1.8 m)
Deck width39 ft (12 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic906 (2020)
Projected traffic1,170 by 2033
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 US 377 over Leon Creek Branch built?

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

What condition is US 377 over Leon Creek 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 June 2023.

How much traffic does US 377 over Leon Creek Branch carry?

About 906 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is US 377 over Leon Creek Branch?

The structure is 27 ft (8.2 m) long with a longest span of 6 ft (1.8 m) and a deck 39 ft wide.

Who owns US 377 over Leon Creek Branch?

It is owned by the State Highway Agency.