US Bridges

CR 421 over San Gabriel Ri Rel

Good

Milam County, Texas · 0.38 MI W of FM 486 · Structure no. 171660AA0315001

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
70
2017 count
Owner
County
County Highway Agency

About this bridge

CR 421 over San Gabriel Ri Rel is a steel stringer/multi-beam or girder carrying CR 421 over San Gabriel Ri Rel in Milam County, Texas. It was built in 2017, so it is 8 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 70 vehicles a day, roughly 5% of them trucks, projected to reach 150 by 2037. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 421
CrossesSan Gabriel Ri Rel
Location0.38 MI W of FM 486
RouteCounty Highway 421
CountyMilam County
StateTexas
Coordinates30.69316, -97.20251
Functional classRural Local

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2017)
Projected traffic150 by 2037
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed3.7 mi (6 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 421 over San Gabriel Ri Rel built?

It was built in 2017, making it 8 years old in 2025.

What condition is CR 421 over San Gabriel Ri Rel 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 October 2023.

How much traffic does CR 421 over San Gabriel Ri Rel carry?

About 70 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is CR 421 over San Gabriel Ri Rel?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns CR 421 over San Gabriel Ri Rel?

It is owned by the County Highway Agency.