US Bridges

FM 577 over Hog Branch

Good

Washington County, Texas · 0.56 MI S of SH 105 · Structure no. 172390244701001

Built
1969
56 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
91 ft
3 main spans
Daily traffic
10,596
2023 count
Owner
State
State Highway Agency

About this bridge

FM 577 over Hog Branch is a concrete stringer/multi-beam or girder carrying FM 577 over Hog Branch in Washington County, Texas. It was built in 1969, so it is 56 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 10,596 vehicles a day, roughly 25% of them trucks, projected to reach 8,695 by 2041. The structure is 91 ft (27.7 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFM 577
CrossesHog Branch
Location0.56 MI S of SH 105
RouteState Highway 577
CountyWashington County
StateTexas
Coordinates30.17118, -96.38147
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length91 ft (27.7 m)
Longest span30 ft (9.1 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,596 (2023)
Projected traffic8,695 by 2041
Trucks25%
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 FM 577 over Hog Branch built?

It was built in 1969, making it 56 years old in 2025.

What condition is FM 577 over Hog 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 April 2023.

How much traffic does FM 577 over Hog Branch carry?

About 10,596 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is FM 577 over Hog Branch?

The structure is 91 ft (27.7 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns FM 577 over Hog Branch?

It is owned by the State Highway Agency.